Finding the Fourth Proportional to 71,469.57, 98,634.07 and 39,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,469.57 : 98,634.07 = 39,648.72 : x
2. Step 2: Convert to fraction form
   71,469.57/98,634.07 = 39,648.72/x
3. Step 3: Cross multiply
   71,469.57x = 98,634.07 × 39,648.72
4. Step 4: Simplify right side
   71,469.57x = 3,910,714,623.89
5. Step 5: Solve for x
   x = 3,910,714,623.89/71,469.57
6. Step 6: Final answer
   x = 54,718.60