Finding the Fourth Proportional to 71,669.94, 98,903.77 and 39,838.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,669.94 : 98,903.77 = 39,838.15 : x
2. Step 2: Convert to fraction form
   71,669.94/98,903.77 = 39,838.15/x
3. Step 3: Cross multiply
   71,669.94x = 98,903.77 × 39,838.15
4. Step 4: Simplify right side
   71,669.94x = 3,940,143,224.83
5. Step 5: Solve for x
   x = 3,940,143,224.83/71,669.94
6. Step 6: Final answer
   x = 54,976.23