Finding the Fourth Proportional to 31,055.32, 42,856.51 and 16,908.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.32 : 42,856.51 = 16,908.27 : x
2. Step 2: Convert to fraction form
   31,055.32/42,856.51 = 16,908.27/x
3. Step 3: Cross multiply
   31,055.32x = 42,856.51 × 16,908.27
4. Step 4: Simplify right side
   31,055.32x = 724,629,143.51
5. Step 5: Solve for x
   x = 724,629,143.51/31,055.32
6. Step 6: Final answer
   x = 23,333.49