Finding the Fourth Proportional to 88.05, 131.38 and 79.34

Step by Step Solution

1. Step 1: Write the proportion equation
   88.05 : 131.38 = 79.34 : x
2. Step 2: Convert to fraction form
   88.05/131.38 = 79.34/x
3. Step 3: Cross multiply
   88.05x = 131.38 × 79.34
4. Step 4: Simplify right side
   88.05x = 10,423.69
5. Step 5: Solve for x
   x = 10,423.69/88.05
6. Step 6: Final answer
   x = 118.39