Finding the Fourth Proportional to 42,059.97, 63,078.98 and 12,469.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,059.97 : 63,078.98 = 12,469.86 : x
2. Step 2: Convert to fraction form
   42,059.97/63,078.98 = 12,469.86/x
3. Step 3: Cross multiply
   42,059.97x = 63,078.98 × 12,469.86
4. Step 4: Simplify right side
   42,059.97x = 786,585,987.19
5. Step 5: Solve for x
   x = 786,585,987.19/42,059.97
6. Step 6: Final answer
   x = 18,701.53