Finding the Fourth Proportional to 71,390.50, 98,522.82 and 39,558.70

Step by Step Solution

1. Step 1: Write the proportion equation
   71,390.50 : 98,522.82 = 39,558.70 : x
2. Step 2: Convert to fraction form
   71,390.50/98,522.82 = 39,558.70/x
3. Step 3: Cross multiply
   71,390.50x = 98,522.82 × 39,558.70
4. Step 4: Simplify right side
   71,390.50x = 3,897,434,679.53
5. Step 5: Solve for x
   x = 3,897,434,679.53/71,390.50
6. Step 6: Final answer
   x = 54,593.18