Finding the Fourth Proportional to 111.17, 153.49 and 69.73

Step by Step Solution

1. Step 1: Write the proportion equation
   111.17 : 153.49 = 69.73 : x
2. Step 2: Convert to fraction form
   111.17/153.49 = 69.73/x
3. Step 3: Cross multiply
   111.17x = 153.49 × 69.73
4. Step 4: Simplify right side
   111.17x = 10,702.86
5. Step 5: Solve for x
   x = 10,702.86/111.17
6. Step 6: Final answer
   x = 96.27