Finding the Fourth Proportional to 158.59, 218.72 and 96.42

Step by Step Solution

1. Step 1: Write the proportion equation
   158.59 : 218.72 = 96.42 : x
2. Step 2: Convert to fraction form
   158.59/218.72 = 96.42/x
3. Step 3: Cross multiply
   158.59x = 218.72 × 96.42
4. Step 4: Simplify right side
   158.59x = 21,088.50
5. Step 5: Solve for x
   x = 21,088.50/158.59
6. Step 6: Final answer
   x = 132.98