Finding the Fourth Proportional to 71,670.29, 98,908.49 and 39,838.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,670.29 : 98,908.49 = 39,838.50 : x
2. Step 2: Convert to fraction form
   71,670.29/98,908.49 = 39,838.50/x
3. Step 3: Cross multiply
   71,670.29x = 98,908.49 × 39,838.50
4. Step 4: Simplify right side
   71,670.29x = 3,940,365,978.46
5. Step 5: Solve for x
   x = 3,940,365,978.46/71,670.29
6. Step 6: Final answer
   x = 54,979.08