Finding the Fourth Proportional to 111.85, 154.37 and 69.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111.85 : 154.37 = 69.86 : x
2. Step 2: Convert to fraction form
   111.85/154.37 = 69.86/x
3. Step 3: Cross multiply
   111.85x = 154.37 × 69.86
4. Step 4: Simplify right side
   111.85x = 10,784.85
5. Step 5: Solve for x
   x = 10,784.85/111.85
6. Step 6: Final answer
   x = 96.42