Finding the Fourth Proportional to 80,724.60, 111,259.98 and 76,059

Step by Step Solution

1. Step 1: Write the proportion equation
   80,724.60 : 111,259.98 = 76,059 : x
2. Step 2: Convert to fraction form
   80,724.60/111,259.98 = 76,059/x
3. Step 3: Cross multiply
   80,724.60x = 111,259.98 × 76,059
4. Step 4: Simplify right side
   80,724.60x = 8,462,322,818.82
5. Step 5: Solve for x
   x = 8,462,322,818.82/80,724.60
6. Step 6: Final answer
   x = 104,829.54