The Kangaroos will face England in the final on Saturday night.
Brett Morris added his pair of tries to the total, Lockyer setting up both efforts, the first with a long pass and the second with a well-placed kick.
Gidley improved Morris’ second before Thurston added his first goal by converting Jennings’ hat-trick score.
France – 4
T: Elima (61)
Australia – 42
T: Jennings (22, 27, 56); Lewis (41); B. Morris (45, 50); J. Morris (67, 72)
G: Gidley (41, 50); Thurston (56, 67, 72)
Ref: Leon Williamson
John Davidson sifts through the super spectacle of the Super League grand final, as Leeds complete a terrific treble and England announce its squad for the Kiwi series.
This epic clash will be the last time that Rhinos' rugged veterans Jamie Peacock, Kylie Leuluai and Kevin Sinfield will wear the Leeds colours, and they will be keen to end their playing careers on a high.
Hunslet have confirmed that Ayden Faal has signed a one-year deal to play for the club in 2016.