Lachlan Murdoch Cemented as Heir to Father Rupert's Media Empire

Lachlan Murdoch named sole chairman of News Corp, cementing his role as successor to father Rupert Murdoch.

Upon Rupert Murdoch's death, voting shares will transfer from him to his 4 adult children, potentially creating power struggle.

Shares controlled through Murdoch Family Trust, which has 8 votes - 4 controlled by Rupert, 4 by his children.

Trust includes shares in News Corp, Fox Corp, as well as farm and art collection.

Succession plan does not include Rupert's 2 youngest daughters, who don't have voting rights in trust.