SkyFire, that is an awesome 9 foot P-38!
Well, artistic license, of course. Though as I think on it, the problem might have been fixable in real life with a 4 or 5-bladed prop with a smaller diameter (though IRL, if such a thing was ever really built, they could have just moved the motor locations outwards a bit more and made the stabilizer chord a bit shorter due to the extra span). Or also have the inboard engines mounted a bit ahead of the outboard engines so the props would clear each other fore-aft but overlap a bit in frontal view (with some nasty aerodynamic issues I'm sure, probably buffeting vibrations on the outboard props hitting the choppy air from the inboard prop tips).
Below, yes, there have been such things as 5 bladed props (a hopped-up Spitfire late in the war). Probably would be a maintenance nightmare for a 4 engined bomber.