Hmm, one problem with the various types of engines is the power rating. Turbofans are usually given in thrust (kN), while turboprop and piston prop are usually given in power (kW).

If wiki is to believed, then...

GE CF6-80C2 produces around 44,700 kW of power and 244kN of thrust.

The numbers are actually pretty close, when looked at in imperial units.

59,900 hp of power and 55,640 lbf of thrust.

You have four of these on a 747-300, so you get a total of 178800 kW of power and 976 kN of thrust.

At the lower end, you have something like an ATR-72, which has 2x 1,846 kW turboprop engines, but no thrust given.