Finding the Fourth Proportional to 31,013.23, 42,798.33 and 16,866.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,013.23 : 42,798.33 = 16,866.10 : x
2. Step 2: Convert to fraction form
   31,013.23/42,798.33 = 16,866.10/x
3. Step 3: Cross multiply
   31,013.23x = 42,798.33 × 16,866.10
4. Step 4: Simplify right side
   31,013.23x = 721,840,913.61
5. Step 5: Solve for x
   x = 721,840,913.61/31,013.23
6. Step 6: Final answer
   x = 23,275.26