Finding the Fourth Proportional to 72,072.92, 99,456.45 and 40,243.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,072.92 : 99,456.45 = 40,243.82 : x
2. Step 2: Convert to fraction form
   72,072.92/99,456.45 = 40,243.82/x
3. Step 3: Cross multiply
   72,072.92x = 99,456.45 × 40,243.82
4. Step 4: Simplify right side
   72,072.92x = 4,002,507,471.64
5. Step 5: Solve for x
   x = 4,002,507,471.64/72,072.92
6. Step 6: Final answer
   x = 55,534.14