Finding the Fourth Proportional to 80,601.98, 111,284.98 and 72,077.54

Step by Step Solution

1. Step 1: Write the proportion equation
   80,601.98 : 111,284.98 = 72,077.54 : x
2. Step 2: Convert to fraction form
   80,601.98/111,284.98 = 72,077.54/x
3. Step 3: Cross multiply
   80,601.98x = 111,284.98 × 72,077.54
4. Step 4: Simplify right side
   80,601.98x = 8,021,147,597.35
5. Step 5: Solve for x
   x = 8,021,147,597.35/80,601.98
6. Step 6: Final answer
   x = 99,515.52