Finding the Fourth Proportional to 48.32, 72.16 and 42.24

Step by Step Solution

1. Step 1: Write the proportion equation
   48.32 : 72.16 = 42.24 : x
2. Step 2: Convert to fraction form
   48.32/72.16 = 42.24/x
3. Step 3: Cross multiply
   48.32x = 72.16 × 42.24
4. Step 4: Simplify right side
   48.32x = 3,047.83
5. Step 5: Solve for x
   x = 3,047.83/48.32
6. Step 6: Final answer
   x = 63.08