Finding the Fourth Proportional to 31,061.66, 42,863.67 and 16,913.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,061.66 : 42,863.67 = 16,913.18 : x
2. Step 2: Convert to fraction form
   31,061.66/42,863.67 = 16,913.18/x
3. Step 3: Cross multiply
   31,061.66x = 42,863.67 × 16,913.18
4. Step 4: Simplify right side
   31,061.66x = 724,960,966.17
5. Step 5: Solve for x
   x = 724,960,966.17/31,061.66
6. Step 6: Final answer
   x = 23,339.41