Finding the Fourth Proportional to 71,693.83, 98,937.25 and 39,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,693.83 : 98,937.25 = 39,862.72 : x
2. Step 2: Convert to fraction form
   71,693.83/98,937.25 = 39,862.72/x
3. Step 3: Cross multiply
   71,693.83x = 98,937.25 × 39,862.72
4. Step 4: Simplify right side
   71,693.83x = 3,943,907,894.32
5. Step 5: Solve for x
   x = 3,943,907,894.32/71,693.83
6. Step 6: Final answer
   x = 55,010.42