Finding the Fourth Proportional to 111.72, 167.52 and 63.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111.72 : 167.52 = 63.68 : x
2. Step 2: Convert to fraction form
   111.72/167.52 = 63.68/x
3. Step 3: Cross multiply
   111.72x = 167.52 × 63.68
4. Step 4: Simplify right side
   111.72x = 10,667.67
5. Step 5: Solve for x
   x = 10,667.67/111.72
6. Step 6: Final answer
   x = 95.49