Finding the Fourth Proportional to 105.91, 158.96 and 65.41

Step by Step Solution

1. Step 1: Write the proportion equation
   105.91 : 158.96 = 65.41 : x
2. Step 2: Convert to fraction form
   105.91/158.96 = 65.41/x
3. Step 3: Cross multiply
   105.91x = 158.96 × 65.41
4. Step 4: Simplify right side
   105.91x = 10,397.34
5. Step 5: Solve for x
   x = 10,397.34/105.91
6. Step 6: Final answer
   x = 98.17