04. Julia Koch

At the age of 61, Julia Koch possesses an impressive net worth of $59.8 billion, primarily attributable to her association with Koch Industries, one of the largest privately held conglomerates globally.

As the widow of David H. Koch, she inherited a substantial stake in the company after his passing, becoming one of the richest heiresses in the US.

Additionally, with a background in fashion, Julia has also made her mark in the industry through her involvement in the MET Costume Institute Benefit Gala.

Despite her immense wealth and connection to the vast Koch family fortune, Julia Koch maintains a relatively private and low-key lifestyle.

Furthermore, she focuses on her philanthropic endeavors, actively engaging in charitable work and supporting causes related to medical research, the arts, and education.

Finally, her commitment to these causes reflects her dedication to making a positive impact on society, showcasing that wealth can be a force for good when used wisely and compassionately.