Finding the Fourth Proportional to 31,105.29, 42,925.97 and 16,958.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.29 : 42,925.97 = 16,958.23 : x
2. Step 2: Convert to fraction form
   31,105.29/42,925.97 = 16,958.23/x
3. Step 3: Cross multiply
   31,105.29x = 42,925.97 × 16,958.23
4. Step 4: Simplify right side
   31,105.29x = 727,948,472.23
5. Step 5: Solve for x
   x = 727,948,472.23/31,105.29
6. Step 6: Final answer
   x = 23,402.72