Finding the Fourth Proportional to 111.97, 167.55 and 75.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111.97 : 167.55 = 75.25 : x
2. Step 2: Convert to fraction form
   111.97/167.55 = 75.25/x
3. Step 3: Cross multiply
   111.97x = 167.55 × 75.25
4. Step 4: Simplify right side
   111.97x = 12,608.14
5. Step 5: Solve for x
   x = 12,608.14/111.97
6. Step 6: Final answer
   x = 112.60