Finding the Fourth Proportional to 99,499.72, 149,249.24 and 40,335.23

Step by Step Solution

1. Step 1: Write the proportion equation
   99,499.72 : 149,249.24 = 40,335.23 : x
2. Step 2: Convert to fraction form
   99,499.72/149,249.24 = 40,335.23/x
3. Step 3: Cross multiply
   99,499.72x = 149,249.24 × 40,335.23
4. Step 4: Simplify right side
   99,499.72x = 6,020,002,422.73
5. Step 5: Solve for x
   x = 6,020,002,422.73/99,499.72
6. Step 6: Final answer
   x = 60,502.71