Finding the Fourth Proportional to 113,738.64, 170,469.60 and 80,468.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,738.64 : 170,469.60 = 80,468.30 : x
2. Step 2: Convert to fraction form
   113,738.64/170,469.60 = 80,468.30/x
3. Step 3: Cross multiply
   113,738.64x = 170,469.60 × 80,468.30
4. Step 4: Simplify right side
   113,738.64x = 13,717,398,061.33
5. Step 5: Solve for x
   x = 13,717,398,061.33/113,738.64
6. Step 6: Final answer
   x = 120,604.55