Finding the Fourth Proportional to 42,515.92, 63,766.71 and 12,118.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,515.92 : 63,766.71 = 12,118.92 : x
2. Step 2: Convert to fraction form
   42,515.92/63,766.71 = 12,118.92/x
3. Step 3: Cross multiply
   42,515.92x = 63,766.71 × 12,118.92
4. Step 4: Simplify right side
   42,515.92x = 772,783,418.03
5. Step 5: Solve for x
   x = 772,783,418.03/42,515.92
6. Step 6: Final answer
   x = 18,176.33