Finding the Fourth Proportional to 111.97, 154.50 and 65.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111.97 : 154.50 = 65.32 : x
2. Step 2: Convert to fraction form
   111.97/154.50 = 65.32/x
3. Step 3: Cross multiply
   111.97x = 154.50 × 65.32
4. Step 4: Simplify right side
   111.97x = 10,091.94
5. Step 5: Solve for x
   x = 10,091.94/111.97
6. Step 6: Final answer
   x = 90.13