Finding the Fourth Proportional to 72.46, 108.58 and 53.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72.46 : 108.58 = 53.08 : x
2. Step 2: Convert to fraction form
   72.46/108.58 = 53.08/x
3. Step 3: Cross multiply
   72.46x = 108.58 × 53.08
4. Step 4: Simplify right side
   72.46x = 5,763.43
5. Step 5: Solve for x
   x = 5,763.43/72.46
6. Step 6: Final answer
   x = 79.54