Forbes List | World’s 10 richest people

Forbes said it calculated each person’s net worth based on stock prices and exchange rates Feb. 13, 2014.

1. Bill Gates

Net worth: $79.2 billion

Source of wealth: Technology company Microsoft Corp.

Nationality: American

2. Carlos Slim Helu

Net worth: $77.1 billion

Source of wealth: Telecommunications

Nationality: Mexican

3. Warren Buffett

Net worth: $72.7 billion

Source of wealth: Investment holding company Berkshire Hathaway Inc.

Nationality: American

4. Amancio Ortega

Net worth: $64.5 billion

Source of wealth: Retail chain Zara

Nationality: Spanish

5. Larry Ellison

Net worth: $54.3 billion

Source of wealth: Technology company Oracle Corp.

Nationality: American

6. Charles Koch (tie)

Net worth: $42.9 billion

Source of wealth: Conglomerate Koch Industries

Nationality: American

6. David Koch (tie)

Net worth: $42.9 billion

Source of wealth: Conglomerate Koch Industries

Nationality: American

8. Christy Walton

Net worth: $41.7 billion

Source of wealth: Retailer Wal-Mart Stores Inc.

Nationality: American

9. Jim Walton

Net worth: $40.6 billion

Source of wealth: Retailer Wal-Mart Stores Inc.

Nationality: American

10. Liliane Bettencourt

Net worth: $40.1 billion

Source of wealth: Cosmetics company L’Oreal

Nationality: French

Source: Forbes