Finding the Fourth Proportional to 402,761.28, 604,404.72 and 150,243.78

Step by Step Solution

1. Step 1: Write the proportion equation
   402,761.28 : 604,404.72 = 150,243.78 : x
2. Step 2: Convert to fraction form
   402,761.28/604,404.72 = 150,243.78/x
3. Step 3: Cross multiply
   402,761.28x = 604,404.72 × 150,243.78
4. Step 4: Simplify right side
   402,761.28x = 90,808,049,782.64
5. Step 5: Solve for x
   x = 90,808,049,782.64/402,761.28
6. Step 6: Final answer
   x = 225,463.70