Yoshiaki Tsutsumi

Historical comparison · Evidence reviewed: $20 Billion

Empire / Country: Japan

Era: 20th Century

Other Historic Billionaires

Mansa Musa I

Mali Empire

14th Century

Unverified public estimate · Source pending: $400–500 Billion

John D. Rockefeller

United States

19th–20th Century

Unverified public estimate · Source pending: $400 Billion

Historical profileAkbar the Great

Akbar the Great

Mughal Empire (India)

16th Century

Unverified public estimate · Source pending: ~$21 Trillion (GDP Share)

Evidence record

Yoshiaki Tsutsumi estimate sources

This record preserves the published collection value while distinguishing supported estimates from amounts that still need a matching valuation source.

Valuation statusSupported estimate

As ofPublished Mar 5, 2016

Evidence confidencemedium

Last reviewedAug 27, 2026

Date basisPublication Date

Displayed valuation$20 Billion

ForbesThe Four People (Besides Bill Gates) Who've Been The World's Richest Person In The Past 30 YearsPublished Mar 5, 2016 · Established Publication

Limitations: Forbes identifies this as its nominal 1987 estimate; the figure is not inflation-adjusted in the collection.