Finding the Fourth Proportional to 111.69, 168.18 and 98.33

Step by Step Solution

1. Step 1: Write the proportion equation
   111.69 : 168.18 = 98.33 : x
2. Step 2: Convert to fraction form
   111.69/168.18 = 98.33/x
3. Step 3: Cross multiply
   111.69x = 168.18 × 98.33
4. Step 4: Simplify right side
   111.69x = 16,536.30
5. Step 5: Solve for x
   x = 16,536.30/111.69
6. Step 6: Final answer
   x = 148.06