10. Sheikh Zayed Bin Sultan Al Nahyan -- $ 23 billion 9. Paul Allen -- $25 billion 8. Warren Buffett -- $28 billion 7. King Fahd Bin Abdul Aziz Alsaud -- $30 billion 6. Lawrence J. Ellison -- $55 billion 5. William Gates III -- $60 billion 4. John Jacob Astor (1763-1848) -- $85 billion 3. Cornelius Vanderbilt (1794-1877) -- $100 billion 2. Andrew Carnegie (1835-1919) -- $110 billion 1. John D. Rockefeller (1839-1937) -- $200 billion