To compare the different measurements, we need to convert them all to the same unit. Let's convert them to liters, which is a commonly used unit of volume.
4200 cm^3 = 4.2 liters (1 liter = 1000 cm^3)
54000 mm^3 = 0.054 liters (1 liter = 1,000,000 mm^3)
45 liters = 45 liters (already in liters)
52000 ml = 52 liters (1 liter = 1000 ml)
So the largest measurement is 52 liters, which corresponds to 52000 ml.