Finding the Fourth Proportional to 72.38, 108.49 and 46.65

Step by Step Solution

1. Step 1: Write the proportion equation
   72.38 : 108.49 = 46.65 : x
2. Step 2: Convert to fraction form
   72.38/108.49 = 46.65/x
3. Step 3: Cross multiply
   72.38x = 108.49 × 46.65
4. Step 4: Simplify right side
   72.38x = 5,061.06
5. Step 5: Solve for x
   x = 5,061.06/72.38
6. Step 6: Final answer
   x = 69.92