If A hits the fourth ring, then 2× 3× 4 = 24.

If it is called by B, then 60÷(4×3)=5 rings, and the rest do not meet the meaning of the question.

If it is called in C, then 60÷4= 15, 15=3×5, but A >；; B > C, so it's beside the point

To sum up, the fourth ring is played by B.