Finding the Fourth Proportional to 72,424.37, 99,944.81 and 40,592.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,424.37 : 99,944.81 = 40,592.59 : x
2. Step 2: Convert to fraction form
   72,424.37/99,944.81 = 40,592.59/x
3. Step 3: Cross multiply
   72,424.37x = 99,944.81 × 40,592.59
4. Step 4: Simplify right side
   72,424.37x = 4,057,018,694.96
5. Step 5: Solve for x
   x = 4,057,018,694.96/72,424.37
6. Step 6: Final answer
   x = 56,017.31