Finding the Fourth Proportional to 71,372.52, 98,492.74 and 39,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,372.52 : 98,492.74 = 39,540.72 : x
2. Step 2: Convert to fraction form
   71,372.52/98,492.74 = 39,540.72/x
3. Step 3: Cross multiply
   71,372.52x = 98,492.74 × 39,540.72
4. Step 4: Simplify right side
   71,372.52x = 3,894,473,854.37
5. Step 5: Solve for x
   x = 3,894,473,854.37/71,372.52
6. Step 6: Final answer
   x = 54,565.45