Finding the Fourth Proportional to 31,013.37, 42,798.51 and 16,866.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,013.37 : 42,798.51 = 16,866.18 : x
2. Step 2: Convert to fraction form
   31,013.37/42,798.51 = 16,866.18/x
3. Step 3: Cross multiply
   31,013.37x = 42,798.51 × 16,866.18
4. Step 4: Simplify right side
   31,013.37x = 721,847,373.39
5. Step 5: Solve for x
   x = 721,847,373.39/31,013.37
6. Step 6: Final answer
   x = 23,275.36