Through investments, he turned a moderate inheritance into a fortune estimated at more than $100 million.

After the firm went public in May 1999, he left with a fortune estimated at $400 million.

His fortune, estimated at $12.8 billion, won him 14th place on Forbes magazine's list of the world's richest people.

Investing in real estate and other businesses, he built a fortune once estimated at $4.4 million.

In 1955, Sewell retired with a fortune estimated at $327 million.

As president of 16 railroad companies, he amassed a fortune estimated at $70 million.

He died suddenly in 1916, leaving a fortune estimated at $170,000,000.

The Queen has a personal fortune estimated at £350 million.

He lost all of his fortune, estimated at $10 million by some.

His fortune, estimated by associates at more than $200 million, remains largely intact.