Finding the Fourth Proportional to 79,891.76, 110,290.56 and 49,686.80

Step by Step Solution

1. Step 1: Write the proportion equation
   79,891.76 : 110,290.56 = 49,686.80 : x
2. Step 2: Convert to fraction form
   79,891.76/110,290.56 = 49,686.80/x
3. Step 3: Cross multiply
   79,891.76x = 110,290.56 × 49,686.80
4. Step 4: Simplify right side
   79,891.76x = 5,479,984,996.61
5. Step 5: Solve for x
   x = 5,479,984,996.61/79,891.76
6. Step 6: Final answer
   x = 68,592.62