Finding the Fourth Proportional to 31,101.68, 42,920.32 and 16,954.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,101.68 : 42,920.32 = 16,954.52 : x
2. Step 2: Convert to fraction form
   31,101.68/42,920.32 = 16,954.52/x
3. Step 3: Cross multiply
   31,101.68x = 42,920.32 × 16,954.52
4. Step 4: Simplify right side
   31,101.68x = 727,693,423.85
5. Step 5: Solve for x
   x = 727,693,423.85/31,101.68
6. Step 6: Final answer
   x = 23,397.24