Finding the Fourth Proportional to 63,819.76, 88,069.80 and 39,959.59

Step by Step Solution

1. Step 1: Write the proportion equation
   63,819.76 : 88,069.80 = 39,959.59 : x
2. Step 2: Convert to fraction form
   63,819.76/88,069.80 = 39,959.59/x
3. Step 3: Cross multiply
   63,819.76x = 88,069.80 × 39,959.59
4. Step 4: Simplify right side
   63,819.76x = 3,519,233,099.38
5. Step 5: Solve for x
   x = 3,519,233,099.38/63,819.76
6. Step 6: Final answer
   x = 55,143.31