Finding the Fourth Proportional to 111.84, 167.94 and 109.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 167.94 = 109.32 : x
2. Step 2: Convert to fraction form
   111.84/167.94 = 109.32/x
3. Step 3: Cross multiply
   111.84x = 167.94 × 109.32
4. Step 4: Simplify right side
   111.84x = 18,359.20
5. Step 5: Solve for x
   x = 18,359.20/111.84
6. Step 6: Final answer
   x = 164.16