Finding the Fourth Proportional to 42,116.50, 63,179.87 and 12,932.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,116.50 : 63,179.87 = 12,932.50 : x
2. Step 2: Convert to fraction form
   42,116.50/63,179.87 = 12,932.50/x
3. Step 3: Cross multiply
   42,116.50x = 63,179.87 × 12,932.50
4. Step 4: Simplify right side
   42,116.50x = 817,073,668.78
5. Step 5: Solve for x
   x = 817,073,668.78/42,116.50
6. Step 6: Final answer
   x = 19,400.32