10 Richest person of all time

A portrait of Cornelius Vanderbilt – Hulton Archive/Getty Images

10. Cornelius Vanderbilt, $185 billion

Henry Ford stands in front of one of his vehicles – Hulton Archive/Getty Images

9. Henry Ford, $199 billion

8. Muammar Gaddafi, $200 billion

A portrait of William the Conqueror – Hulton Archive/Getty Images

7. William the Conqueror, $209 billion to $229 billion

A drawing of Jakob Fugger – Hulton Archive/Getty Images

6. Jakob Fugger, $221 billion

Ali Khan’s palace in Hyderabad – Noah Seelam/Getty Images

5. Mir Osman Ali Khan, $230 billion

4. Nikolai Alexandrovich Romanov, $300 billion

Andrew Carnegie standing in a park – Hulton Archive/Getty Images

3. Andrew Carnegie, $310 billion

Rockefeller hard at work – Hulton Archive/Getty Images

2. John D. Rockefeller, $340 billion

1. Mansa Musa, $400 billion