Complex sentence: In July 1999, Desmarest had also led the TotalFina enterprise through the acquisition of Elf Acquitaine for $44 billion, it was this procurement that raised TotalFina to the fourth largest oil company in the world.
Split into simpler sentences: In July 1999, Desmarest had also led the TotalFina enterprise through the acquisition of Elf Acquitaine for $44 billion. It was this procurement that raised TotalFina to the fourth largest oil company in the world.