Finding the Fourth Proportional to 72,371.56, 99,870.96 and 40,540.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,371.56 : 99,870.96 = 40,540.24 : x
2. Step 2: Convert to fraction form
   72,371.56/99,870.96 = 40,540.24/x
3. Step 3: Cross multiply
   72,371.56x = 99,870.96 × 40,540.24
4. Step 4: Simplify right side
   72,371.56x = 4,048,792,687.43
5. Step 5: Solve for x
   x = 4,048,792,687.43/72,371.56
6. Step 6: Final answer
   x = 55,944.53