Finding the Fourth Proportional to 99,407.79, 149,106.15 and 40,227.57

Step by Step Solution

1. Step 1: Write the proportion equation
   99,407.79 : 149,106.15 = 40,227.57 : x
2. Step 2: Convert to fraction form
   99,407.79/149,106.15 = 40,227.57/x
3. Step 3: Cross multiply
   99,407.79x = 149,106.15 × 40,227.57
4. Step 4: Simplify right side
   99,407.79x = 5,998,178,086.56
5. Step 5: Solve for x
   x = 5,998,178,086.56/99,407.79
6. Step 6: Final answer
   x = 60,339.12