Finding the Fourth Proportional to 31,280.88, 43,166.02 and 17,131

Step by Step Solution

1. Step 1: Write the proportion equation
   31,280.88 : 43,166.02 = 17,131 : x
2. Step 2: Convert to fraction form
   31,280.88/43,166.02 = 17,131/x
3. Step 3: Cross multiply
   31,280.88x = 43,166.02 × 17,131
4. Step 4: Simplify right side
   31,280.88x = 739,477,088.62
5. Step 5: Solve for x
   x = 739,477,088.62/31,280.88
6. Step 6: Final answer
   x = 23,639.91