Finding the Fourth Proportional to 392,470.72, 541,594.56 and 222,694.72

Step by Step Solution

1. Step 1: Write the proportion equation
   392,470.72 : 541,594.56 = 222,694.72 : x
2. Step 2: Convert to fraction form
   392,470.72/541,594.56 = 222,694.72/x
3. Step 3: Cross multiply
   392,470.72x = 541,594.56 × 222,694.72
4. Step 4: Simplify right side
   392,470.72x = 120,610,248,892.72
5. Step 5: Solve for x
   x = 120,610,248,892.72/392,470.72
6. Step 6: Final answer
   x = 307,310.18