Finding the Fourth Proportional to 90,499.02, 135,793.74 and 40,614.78

Step by Step Solution

1. Step 1: Write the proportion equation
   90,499.02 : 135,793.74 = 40,614.78 : x
2. Step 2: Convert to fraction form
   90,499.02/135,793.74 = 40,614.78/x
3. Step 3: Cross multiply
   90,499.02x = 135,793.74 × 40,614.78
4. Step 4: Simplify right side
   90,499.02x = 5,515,232,875.48
5. Step 5: Solve for x
   x = 5,515,232,875.48/90,499.02
6. Step 6: Final answer
   x = 60,942.46