Finding the Fourth Proportional to 42,062.46, 63,091.53 and 12,480.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,062.46 : 63,091.53 = 12,480.54 : x
2. Step 2: Convert to fraction form
   42,062.46/63,091.53 = 12,480.54/x
3. Step 3: Cross multiply
   42,062.46x = 63,091.53 × 12,480.54
4. Step 4: Simplify right side
   42,062.46x = 787,416,363.83
5. Step 5: Solve for x
   x = 787,416,363.83/42,062.46
6. Step 6: Final answer
   x = 18,720.17