Finding the Fourth Proportional to 31,081.60, 42,892.08 and 16,934.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.60 : 42,892.08 = 16,934.56 : x
2. Step 2: Convert to fraction form
   31,081.60/42,892.08 = 16,934.56/x
3. Step 3: Cross multiply
   31,081.60x = 42,892.08 × 16,934.56
4. Step 4: Simplify right side
   31,081.60x = 726,358,502.28
5. Step 5: Solve for x
   x = 726,358,502.28/31,081.60
6. Step 6: Final answer
   x = 23,369.41