Finding the Fourth Proportional to 93.23, 128.55 and 82.72

Step by Step Solution

1. Step 1: Write the proportion equation
   93.23 : 128.55 = 82.72 : x
2. Step 2: Convert to fraction form
   93.23/128.55 = 82.72/x
3. Step 3: Cross multiply
   93.23x = 128.55 × 82.72
4. Step 4: Simplify right side
   93.23x = 10,633.02
5. Step 5: Solve for x
   x = 10,633.02/93.23
6. Step 6: Final answer
   x = 114.05