Finding the Fourth Proportional to 72.72, 109.28 and 48.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72.72 : 109.28 = 48.84 : x
2. Step 2: Convert to fraction form
   72.72/109.28 = 48.84/x
3. Step 3: Cross multiply
   72.72x = 109.28 × 48.84
4. Step 4: Simplify right side
   72.72x = 5,337.24
5. Step 5: Solve for x
   x = 5,337.24/72.72
6. Step 6: Final answer
   x = 73.39