Finding the Fourth Proportional to 111.84, 168 and 106.24

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 168 = 106.24 : x
2. Step 2: Convert to fraction form
   111.84/168 = 106.24/x
3. Step 3: Cross multiply
   111.84x = 168 × 106.24
4. Step 4: Simplify right side
   111.84x = 17,848.32
5. Step 5: Solve for x
   x = 17,848.32/111.84
6. Step 6: Final answer
   x = 159.59