Finding the Fourth Proportional to 402,100.61, 603,019.69 and 177,451.97

Step by Step Solution

1. Step 1: Write the proportion equation
   402,100.61 : 603,019.69 = 177,451.97 : x
2. Step 2: Convert to fraction form
   402,100.61/603,019.69 = 177,451.97/x
3. Step 3: Cross multiply
   402,100.61x = 603,019.69 × 177,451.97
4. Step 4: Simplify right side
   402,100.61x = 107,007,028,480.56
5. Step 5: Solve for x
   x = 107,007,028,480.56/402,100.61
6. Step 6: Final answer
   x = 266,120.04