Finding the Fourth Proportional to 71,479.37, 98,640.82 and 39,647.45

Step by Step Solution

1. Step 1: Write the proportion equation
   71,479.37 : 98,640.82 = 39,647.45 : x
2. Step 2: Convert to fraction form
   71,479.37/98,640.82 = 39,647.45/x
3. Step 3: Cross multiply
   71,479.37x = 98,640.82 × 39,647.45
4. Step 4: Simplify right side
   71,479.37x = 3,910,857,275.07
5. Step 5: Solve for x
   x = 3,910,857,275.07/71,479.37
6. Step 6: Final answer
   x = 54,713.09