Finding the Fourth Proportional to 111.09, 153.28 and 69.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111.09 : 153.28 = 69.63 : x
2. Step 2: Convert to fraction form
   111.09/153.28 = 69.63/x
3. Step 3: Cross multiply
   111.09x = 153.28 × 69.63
4. Step 4: Simplify right side
   111.09x = 10,672.89
5. Step 5: Solve for x
   x = 10,672.89/111.09
6. Step 6: Final answer
   x = 96.07