Finding the Fourth Proportional to 111.06, 167.94 and 111.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111.06 : 167.94 = 111.06 : x
2. Step 2: Convert to fraction form
   111.06/167.94 = 111.06/x
3. Step 3: Cross multiply
   111.06x = 167.94 × 111.06
4. Step 4: Simplify right side
   111.06x = 18,651.42
5. Step 5: Solve for x
   x = 18,651.42/111.06
6. Step 6: Final answer
   x = 167.94