Finding the Fourth Proportional to 158.79, 238.17 and 43.25

Step by Step Solution

1. Step 1: Write the proportion equation
   158.79 : 238.17 = 43.25 : x
2. Step 2: Convert to fraction form
   158.79/238.17 = 43.25/x
3. Step 3: Cross multiply
   158.79x = 238.17 × 43.25
4. Step 4: Simplify right side
   158.79x = 10,300.26
5. Step 5: Solve for x
   x = 10,300.26/158.79
6. Step 6: Final answer
   x = 64.87