Finding the Fourth Proportional to 72,151.42, 99,567.24 and 40,326.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72,151.42 : 99,567.24 = 40,326.47 : x
2. Step 2: Convert to fraction form
   72,151.42/99,567.24 = 40,326.47/x
3. Step 3: Cross multiply
   72,151.42x = 99,567.24 × 40,326.47
4. Step 4: Simplify right side
   72,151.42x = 4,015,195,490.15
5. Step 5: Solve for x
   x = 4,015,195,490.15/72,151.42
6. Step 6: Final answer
   x = 55,649.57