Finding the Fourth Proportional to 31,006.62, 42,789.09 and 16,859.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,006.62 : 42,789.09 = 16,859.46 : x
2. Step 2: Convert to fraction form
   31,006.62/42,789.09 = 16,859.46/x
3. Step 3: Cross multiply
   31,006.62x = 42,789.09 × 16,859.46
4. Step 4: Simplify right side
   31,006.62x = 721,400,951.29
5. Step 5: Solve for x
   x = 721,400,951.29/31,006.62
6. Step 6: Final answer
   x = 23,266.03