Finding the Fourth Proportional to 82.32, 113.22 and 67.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82.32 : 113.22 = 67.72 : x
2. Step 2: Convert to fraction form
   82.32/113.22 = 67.72/x
3. Step 3: Cross multiply
   82.32x = 113.22 × 67.72
4. Step 4: Simplify right side
   82.32x = 7,667.26
5. Step 5: Solve for x
   x = 7,667.26/82.32
6. Step 6: Final answer
   x = 93.14