Finding the Fourth Proportional to 96.24, 132.72 and 72.84

Step by Step Solution

1. Step 1: Write the proportion equation
   96.24 : 132.72 = 72.84 : x
2. Step 2: Convert to fraction form
   96.24/132.72 = 72.84/x
3. Step 3: Cross multiply
   96.24x = 132.72 × 72.84
4. Step 4: Simplify right side
   96.24x = 9,667.32
5. Step 5: Solve for x
   x = 9,667.32/96.24
6. Step 6: Final answer
   x = 100.45