Finding the Fourth Proportional to 492,470.56, 738,443.28 and 255,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   492,470.56 : 738,443.28 = 255,574.72 : x
2. Step 2: Convert to fraction form
   492,470.56/738,443.28 = 255,574.72/x
3. Step 3: Cross multiply
   492,470.56x = 738,443.28 × 255,574.72
4. Step 4: Simplify right side
   492,470.56x = 188,727,434,521.88
5. Step 5: Solve for x
   x = 188,727,434,521.88/492,470.56
6. Step 6: Final answer
   x = 383,225.82