Finding the Fourth Proportional to 71,922.78, 99,254.73 and 40,088.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,922.78 : 99,254.73 = 40,088.25 : x
2. Step 2: Convert to fraction form
   71,922.78/99,254.73 = 40,088.25/x
3. Step 3: Cross multiply
   71,922.78x = 99,254.73 × 40,088.25
4. Step 4: Simplify right side
   71,922.78x = 3,978,948,429.92
5. Step 5: Solve for x
   x = 3,978,948,429.92/71,922.78
6. Step 6: Final answer
   x = 55,322.51