Finding the Fourth Proportional to 31,149.84, 42,987 and 17,002.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,149.84 : 42,987 = 17,002.80 : x
2. Step 2: Convert to fraction form
   31,149.84/42,987 = 17,002.80/x
3. Step 3: Cross multiply
   31,149.84x = 42,987 × 17,002.80
4. Step 4: Simplify right side
   31,149.84x = 730,899,363.60
5. Step 5: Solve for x
   x = 730,899,363.60/31,149.84
6. Step 6: Final answer
   x = 23,463.98