Finding the Fourth Proportional to 111.42, 167.10 and 65.76

Step by Step Solution

1. Step 1: Write the proportion equation
   111.42 : 167.10 = 65.76 : x
2. Step 2: Convert to fraction form
   111.42/167.10 = 65.76/x
3. Step 3: Cross multiply
   111.42x = 167.10 × 65.76
4. Step 4: Simplify right side
   111.42x = 10,988.50
5. Step 5: Solve for x
   x = 10,988.50/111.42
6. Step 6: Final answer
   x = 98.62