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
The fixtures for Super League 2017 have been released with each of the twelve clubs discovering who they will face at key points throughout the season.
We spoke to referee Jack Smith about his rapid rise from the mariners to overseeing televised Super League clashes.
Scotland coach Steve McCormack says the Bravehearts will field their best squad ever assembled in this year's Four Nations.