Finding the Fourth Proportional to 89.59, 134.31 and 79.93

Step by Step Solution

1. Step 1: Write the proportion equation
   89.59 : 134.31 = 79.93 : x
2. Step 2: Convert to fraction form
   89.59/134.31 = 79.93/x
3. Step 3: Cross multiply
   89.59x = 134.31 × 79.93
4. Step 4: Simplify right side
   89.59x = 10,735.40
5. Step 5: Solve for x
   x = 10,735.40/89.59
6. Step 6: Final answer
   x = 119.83