Finding the Fourth Proportional to 280,779.78, 386,499.69 and 244,907.31

Step by Step Solution

1. Step 1: Write the proportion equation
   280,779.78 : 386,499.69 = 244,907.31 : x
2. Step 2: Convert to fraction form
   280,779.78/386,499.69 = 244,907.31/x
3. Step 3: Cross multiply
   280,779.78x = 386,499.69 × 244,907.31
4. Step 4: Simplify right side
   280,779.78x = 94,656,599,393.73
5. Step 5: Solve for x
   x = 94,656,599,393.73/280,779.78
6. Step 6: Final answer
   x = 337,120.43