Finding the Fourth Proportional to 71,784.53, 99,063.59 and 39,522.90

Step by Step Solution

1. Step 1: Write the proportion equation
   71,784.53 : 99,063.59 = 39,522.90 : x
2. Step 2: Convert to fraction form
   71,784.53/99,063.59 = 39,522.90/x
3. Step 3: Cross multiply
   71,784.53x = 99,063.59 × 39,522.90
4. Step 4: Simplify right side
   71,784.53x = 3,915,280,361.21
5. Step 5: Solve for x
   x = 3,915,280,361.21/71,784.53
6. Step 6: Final answer
   x = 54,542.12