Finding the Fourth Proportional to 31,123.14, 42,949.92 and 16,976.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,123.14 : 42,949.92 = 16,976.07 : x
2. Step 2: Convert to fraction form
   31,123.14/42,949.92 = 16,976.07/x
3. Step 3: Cross multiply
   31,123.14x = 42,949.92 × 16,976.07
4. Step 4: Simplify right side
   31,123.14x = 729,120,848.41
5. Step 5: Solve for x
   x = 729,120,848.41/31,123.14
6. Step 6: Final answer
   x = 23,426.97