Finding the Fourth Proportional to 105.42, 158.25 and 59.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105.42 : 158.25 = 59.76 : x
2. Step 2: Convert to fraction form
   105.42/158.25 = 59.76/x
3. Step 3: Cross multiply
   105.42x = 158.25 × 59.76
4. Step 4: Simplify right side
   105.42x = 9,457.02
5. Step 5: Solve for x
   x = 9,457.02/105.42
6. Step 6: Final answer
   x = 89.71