Finding the Fourth Proportional to 72.63, 108.88 and 52.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72.63 : 108.88 = 52.38 : x
2. Step 2: Convert to fraction form
   72.63/108.88 = 52.38/x
3. Step 3: Cross multiply
   72.63x = 108.88 × 52.38
4. Step 4: Simplify right side
   72.63x = 5,703.00
5. Step 5: Solve for x
   x = 5,703.00/72.63
6. Step 6: Final answer
   x = 78.52