Finding the Fourth Proportional to 115.10, 158.83 and 65.96

Step by Step Solution

1. Step 1: Write the proportion equation
   115.10 : 158.83 = 65.96 : x
2. Step 2: Convert to fraction form
   115.10/158.83 = 65.96/x
3. Step 3: Cross multiply
   115.10x = 158.83 × 65.96
4. Step 4: Simplify right side
   115.10x = 10,475.47
5. Step 5: Solve for x
   x = 10,475.47/115.10
6. Step 6: Final answer
   x = 91.02