Finding the Fourth Proportional to 31,088.96, 42,902.69 and 16,941.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,088.96 : 42,902.69 = 16,941.78 : x
2. Step 2: Convert to fraction form
   31,088.96/42,902.69 = 16,941.78/x
3. Step 3: Cross multiply
   31,088.96x = 42,902.69 × 16,941.78
4. Step 4: Simplify right side
   31,088.96x = 726,847,935.39
5. Step 5: Solve for x
   x = 726,847,935.39/31,088.96
6. Step 6: Final answer
   x = 23,379.62