Finding the Fourth Proportional to 111.75, 167.50 and 60.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111.75 : 167.50 = 60.50 : x
2. Step 2: Convert to fraction form
   111.75/167.50 = 60.50/x
3. Step 3: Cross multiply
   111.75x = 167.50 × 60.50
4. Step 4: Simplify right side
   111.75x = 10,133.75
5. Step 5: Solve for x
   x = 10,133.75/111.75
6. Step 6: Final answer
   x = 90.68