Finding the Fourth Proportional to 71,845.83, 99,143.33 and 39,574.13

Step by Step Solution

1. Step 1: Write the proportion equation
   71,845.83 : 99,143.33 = 39,574.13 : x
2. Step 2: Convert to fraction form
   71,845.83/99,143.33 = 39,574.13/x
3. Step 3: Cross multiply
   71,845.83x = 99,143.33 × 39,574.13
4. Step 4: Simplify right side
   71,845.83x = 3,923,510,336.47
5. Step 5: Solve for x
   x = 3,923,510,336.47/71,845.83
6. Step 6: Final answer
   x = 54,610.13