Finding the Fourth Proportional to 111.62, 154.04 and 65.00

Step by Step Solution

1. Step 1: Write the proportion equation
   111.62 : 154.04 = 65.00 : x
2. Step 2: Convert to fraction form
   111.62/154.04 = 65.00/x
3. Step 3: Cross multiply
   111.62x = 154.04 × 65.00
4. Step 4: Simplify right side
   111.62x = 10,013.15
5. Step 5: Solve for x
   x = 10,013.15/111.62
6. Step 6: Final answer
   x = 89.71