Finding the Fourth Proportional to 72.16, 108.12 and 48.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72.16 : 108.12 = 48.06 : x
2. Step 2: Convert to fraction form
   72.16/108.12 = 48.06/x
3. Step 3: Cross multiply
   72.16x = 108.12 × 48.06
4. Step 4: Simplify right side
   72.16x = 5,196.25
5. Step 5: Solve for x
   x = 5,196.25/72.16
6. Step 6: Final answer
   x = 72.01