Finding the Fourth Proportional to 71,247.89, 98,321.67 and 39,416.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,247.89 : 98,321.67 = 39,416.10 : x
2. Step 2: Convert to fraction form
   71,247.89/98,321.67 = 39,416.10/x
3. Step 3: Cross multiply
   71,247.89x = 98,321.67 × 39,416.10
4. Step 4: Simplify right side
   71,247.89x = 3,875,456,776.89
5. Step 5: Solve for x
   x = 3,875,456,776.89/71,247.89
6. Step 6: Final answer
   x = 54,393.99