Finding the Fourth Proportional to 111.79, 154.17 and 70.33

Step by Step Solution

1. Step 1: Write the proportion equation
   111.79 : 154.17 = 70.33 : x
2. Step 2: Convert to fraction form
   111.79/154.17 = 70.33/x
3. Step 3: Cross multiply
   111.79x = 154.17 × 70.33
4. Step 4: Simplify right side
   111.79x = 10,842.78
5. Step 5: Solve for x
   x = 10,842.78/111.79
6. Step 6: Final answer
   x = 96.99