Who is the richest man nowadays??
1. Bill Gates, $72.7 billion
Microsoft's co-founder and chairman hit a five-year high on the index, making him the world's richest man for the first time since 2007.
2. Carlos Slim, $72.1 billion
Falling behind Gates by a, um, Slim margin is Mexican investor Carlos Slim, who owns the largest mobile phone operator in the Americas and has major holdings in the mining and banking industries.
3. Warren Buffett $62 billion
America's most beloved investor has seen his fortune swell to an estimated $62 billion, up $10 billion from a year ago.
4.Amancio Ortega, $56 billion
Spanish fashion executive Amancio Ortega is Europe's richest person. His group Inditex operates several brands, including flagship Zara.
5.Ingvar Kamprad, $55.6 billion
The controlling investor in IKEA, the world's largest furniture retailer, saw his worth jump by $12.7 billion since last year. IKEA posted over $4 billion in net income in 2012
6. Charles Koch, $45.2 billion
CEO and chairman of Koch Industries, operating in oil refining, pipelines, ranching and pulp. He and his brother David (no. 7 on this list) are renowned for their involvement in American conservative and libertarian politics.
7. David Koch, $45.2 billion
Executive VP of Koch Industries, with an equal 42% share as his brother Charles
8.Larry Ellison, $41.6 billion
The founder of database software company Oracle also holds a controlling interest in educational software developer LeapFrog Enterprises.
9.Christy Walton, $37.9 billion
The widow of John T. Walton, the son of Wal-Mart founder Sam Walton, is the world's richest woman, with a 12 per cent stake in Wal-Mart. The next three richest people on Bloomberg's Index are all members of the Walton family.
10. Jim Walton
Walton family derives its major chunk of wealth from Walmart
Find out more at :
Bloomberg Billionaires 
