Finding the Fourth Proportional to 82,439.76, 123,668.72 and 26,266.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,439.76 : 123,668.72 = 26,266.80 : x
2. Step 2: Convert to fraction form
   82,439.76/123,668.72 = 26,266.80/x
3. Step 3: Cross multiply
   82,439.76x = 123,668.72 × 26,266.80
4. Step 4: Simplify right side
   82,439.76x = 3,248,381,534.50
5. Step 5: Solve for x
   x = 3,248,381,534.50/82,439.76
6. Step 6: Final answer
   x = 39,403.09