Finding the Fourth Proportional to 89.55, 123.57 and 83.02

Step by Step Solution

1. Step 1: Write the proportion equation
   89.55 : 123.57 = 83.02 : x
2. Step 2: Convert to fraction form
   89.55/123.57 = 83.02/x
3. Step 3: Cross multiply
   89.55x = 123.57 × 83.02
4. Step 4: Simplify right side
   89.55x = 10,258.47
5. Step 5: Solve for x
   x = 10,258.47/89.55
6. Step 6: Final answer
   x = 114.56