Finding the Fourth Proportional to 105.59, 158.16 and 59.81

Step by Step Solution

1. Step 1: Write the proportion equation
   105.59 : 158.16 = 59.81 : x
2. Step 2: Convert to fraction form
   105.59/158.16 = 59.81/x
3. Step 3: Cross multiply
   105.59x = 158.16 × 59.81
4. Step 4: Simplify right side
   105.59x = 9,459.55
5. Step 5: Solve for x
   x = 9,459.55/105.59
6. Step 6: Final answer
   x = 89.59