Finding the Fourth Proportional to 80,978.59, 111,750.57 and 45,170.88

Step by Step Solution

1. Step 1: Write the proportion equation
   80,978.59 : 111,750.57 = 45,170.88 : x
2. Step 2: Convert to fraction form
   80,978.59/111,750.57 = 45,170.88/x
3. Step 3: Cross multiply
   80,978.59x = 111,750.57 × 45,170.88
4. Step 4: Simplify right side
   80,978.59x = 5,047,871,796.93
5. Step 5: Solve for x
   x = 5,047,871,796.93/80,978.59
6. Step 6: Final answer
   x = 62,335.88