Finding the Fourth Proportional to 31,006.22, 42,789.13 and 16,859.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,006.22 : 42,789.13 = 16,859.16 : x
2. Step 2: Convert to fraction form
   31,006.22/42,789.13 = 16,859.16/x
3. Step 3: Cross multiply
   31,006.22x = 42,789.13 × 16,859.16
4. Step 4: Simplify right side
   31,006.22x = 721,388,788.93
5. Step 5: Solve for x
   x = 721,388,788.93/31,006.22
6. Step 6: Final answer
   x = 23,265.94