Finding the Fourth Proportional to 478,308.24, 660,058.20 and 263,448.72

Step by Step Solution

1. Step 1: Write the proportion equation
   478,308.24 : 660,058.20 = 263,448.72 : x
2. Step 2: Convert to fraction form
   478,308.24/660,058.20 = 263,448.72/x
3. Step 3: Cross multiply
   478,308.24x = 660,058.20 × 263,448.72
4. Step 4: Simplify right side
   478,308.24x = 173,891,487,915.50
5. Step 5: Solve for x
   x = 173,891,487,915.50/478,308.24
6. Step 6: Final answer
   x = 363,555.28