Finding the Fourth Proportional to 71,401.91, 98,534.88 and 39,571.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,401.91 : 98,534.88 = 39,571.34 : x
2. Step 2: Convert to fraction form
   71,401.91/98,534.88 = 39,571.34/x
3. Step 3: Cross multiply
   71,401.91x = 98,534.88 × 39,571.34
4. Step 4: Simplify right side
   71,401.91x = 3,899,156,745.66
5. Step 5: Solve for x
   x = 3,899,156,745.66/71,401.91
6. Step 6: Final answer
   x = 54,608.58