Finding the Fourth Proportional to 397,499.54, 548,563.89 and 227,766.47

Step by Step Solution

1. Step 1: Write the proportion equation
   397,499.54 : 548,563.89 = 227,766.47 : x
2. Step 2: Convert to fraction form
   397,499.54/548,563.89 = 227,766.47/x
3. Step 3: Cross multiply
   397,499.54x = 548,563.89 × 227,766.47
4. Step 4: Simplify right side
   397,499.54x = 124,944,458,906.07
5. Step 5: Solve for x
   x = 124,944,458,906.07/397,499.54
6. Step 6: Final answer
   x = 314,326.05