Finding the Fourth Proportional to 42,442.62, 63,648.87 and 12,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,442.62 : 63,648.87 = 12,448.50 : x
2. Step 2: Convert to fraction form
   42,442.62/63,648.87 = 12,448.50/x
3. Step 3: Cross multiply
   42,442.62x = 63,648.87 × 12,448.50
4. Step 4: Simplify right side
   42,442.62x = 792,332,958.20
5. Step 5: Solve for x
   x = 792,332,958.20/42,442.62
6. Step 6: Final answer
   x = 18,668.33