Finding the Fourth Proportional to 82.72, 123.99 and 46.63

Step by Step Solution

1. Step 1: Write the proportion equation
   82.72 : 123.99 = 46.63 : x
2. Step 2: Convert to fraction form
   82.72/123.99 = 46.63/x
3. Step 3: Cross multiply
   82.72x = 123.99 × 46.63
4. Step 4: Simplify right side
   82.72x = 5,781.65
5. Step 5: Solve for x
   x = 5,781.65/82.72
6. Step 6: Final answer
   x = 69.89