Finding the Fourth Proportional to 72,293.78, 99,761.49 and 40,456.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,293.78 : 99,761.49 = 40,456.52 : x
2. Step 2: Convert to fraction form
   72,293.78/99,761.49 = 40,456.52/x
3. Step 3: Cross multiply
   72,293.78x = 99,761.49 × 40,456.52
4. Step 4: Simplify right side
   72,293.78x = 4,036,002,715.41
5. Step 5: Solve for x
   x = 4,036,002,715.41/72,293.78
6. Step 6: Final answer
   x = 55,827.80