Finding the Fourth Proportional to 105.37, 158.05 and 59.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105.37 : 158.05 = 59.74 : x
2. Step 2: Convert to fraction form
   105.37/158.05 = 59.74/x
3. Step 3: Cross multiply
   105.37x = 158.05 × 59.74
4. Step 4: Simplify right side
   105.37x = 9,441.59
5. Step 5: Solve for x
   x = 9,441.59/105.37
6. Step 6: Final answer
   x = 89.61