Finding the Fourth Proportional to 354,443.99, 488,856.24 and 227,131.43

Step by Step Solution

1. Step 1: Write the proportion equation
   354,443.99 : 488,856.24 = 227,131.43 : x
2. Step 2: Convert to fraction form
   354,443.99/488,856.24 = 227,131.43/x
3. Step 3: Cross multiply
   354,443.99x = 488,856.24 × 227,131.43
4. Step 4: Simplify right side
   354,443.99x = 111,034,614,411.34
5. Step 5: Solve for x
   x = 111,034,614,411.34/354,443.99
6. Step 6: Final answer
   x = 313,264.21