Finding the Fourth Proportional to 111.34, 167.06 and 65.71

Step by Step Solution

1. Step 1: Write the proportion equation
   111.34 : 167.06 = 65.71 : x
2. Step 2: Convert to fraction form
   111.34/167.06 = 65.71/x
3. Step 3: Cross multiply
   111.34x = 167.06 × 65.71
4. Step 4: Simplify right side
   111.34x = 10,977.18
5. Step 5: Solve for x
   x = 10,977.18/111.34
6. Step 6: Final answer
   x = 98.59