Finding the Fourth Proportional to 402,061.59, 603,136.13 and 149,312.43

Step by Step Solution

1. Step 1: Write the proportion equation
   402,061.59 : 603,136.13 = 149,312.43 : x
2. Step 2: Convert to fraction form
   402,061.59/603,136.13 = 149,312.43/x
3. Step 3: Cross multiply
   402,061.59x = 603,136.13 × 149,312.43
4. Step 4: Simplify right side
   402,061.59x = 90,055,720,444.53
5. Step 5: Solve for x
   x = 90,055,720,444.53/402,061.59
6. Step 6: Final answer
   x = 223,984.89