Finding the Fourth Proportional to 416,422.71, 574,665.17 and 225,436.10

Step by Step Solution

1. Step 1: Write the proportion equation
   416,422.71 : 574,665.17 = 225,436.10 : x
2. Step 2: Convert to fraction form
   416,422.71/574,665.17 = 225,436.10/x
3. Step 3: Cross multiply
   416,422.71x = 574,665.17 × 225,436.10
4. Step 4: Simplify right side
   416,422.71x = 129,550,270,730.13
5. Step 5: Solve for x
   x = 129,550,270,730.13/416,422.71
6. Step 6: Final answer
   x = 311,102.80