Finding the Fourth Proportional to 111.93, 167.69 and 71.27

Step by Step Solution

1. Step 1: Write the proportion equation
   111.93 : 167.69 = 71.27 : x
2. Step 2: Convert to fraction form
   111.93/167.69 = 71.27/x
3. Step 3: Cross multiply
   111.93x = 167.69 × 71.27
4. Step 4: Simplify right side
   111.93x = 11,950.07
5. Step 5: Solve for x
   x = 11,950.07/111.93
6. Step 6: Final answer
   x = 106.76