Finding the Fourth Proportional to 114.72, 158.28 and 65.59

Step by Step Solution

1. Step 1: Write the proportion equation
   114.72 : 158.28 = 65.59 : x
2. Step 2: Convert to fraction form
   114.72/158.28 = 65.59/x
3. Step 3: Cross multiply
   114.72x = 158.28 × 65.59
4. Step 4: Simplify right side
   114.72x = 10,381.65
5. Step 5: Solve for x
   x = 10,381.65/114.72
6. Step 6: Final answer
   x = 90.50