Finding the Fourth Proportional to 105.46, 158.03 and 64.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105.46 : 158.03 = 64.76 : x
2. Step 2: Convert to fraction form
   105.46/158.03 = 64.76/x
3. Step 3: Cross multiply
   105.46x = 158.03 × 64.76
4. Step 4: Simplify right side
   105.46x = 10,233.15
5. Step 5: Solve for x
   x = 10,233.15/105.46
6. Step 6: Final answer
   x = 97.04