Finding the Fourth Proportional to 72,404.64, 99,922.32 and 40,583.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,404.64 : 99,922.32 = 40,583.76 : x
2. Step 2: Convert to fraction form
   72,404.64/99,922.32 = 40,583.76/x
3. Step 3: Cross multiply
   72,404.64x = 99,922.32 × 40,583.76
4. Step 4: Simplify right side
   72,404.64x = 4,055,223,453.52
5. Step 5: Solve for x
   x = 4,055,223,453.52/72,404.64
6. Step 6: Final answer
   x = 56,007.78