Finding the Fourth Proportional to 354,460.78, 488,879.31 and 227,148.22

Step by Step Solution

1. Step 1: Write the proportion equation
   354,460.78 : 488,879.31 = 227,148.22 : x
2. Step 2: Convert to fraction form
   354,460.78/488,879.31 = 227,148.22/x
3. Step 3: Cross multiply
   354,460.78x = 488,879.31 × 227,148.22
4. Step 4: Simplify right side
   354,460.78x = 111,048,065,061.33
5. Step 5: Solve for x
   x = 111,048,065,061.33/354,460.78
6. Step 6: Final answer
   x = 313,287.31