Finding the Fourth Proportional to 352,047.72, 485,698.50 and 231,254.76

Step by Step Solution

1. Step 1: Write the proportion equation
   352,047.72 : 485,698.50 = 231,254.76 : x
2. Step 2: Convert to fraction form
   352,047.72/485,698.50 = 231,254.76/x
3. Step 3: Cross multiply
   352,047.72x = 485,698.50 × 231,254.76
4. Step 4: Simplify right side
   352,047.72x = 112,320,090,049.86
5. Step 5: Solve for x
   x = 112,320,090,049.86/352,047.72
6. Step 6: Final answer
   x = 319,047.91