Finding the Fourth Proportional to 89,721.27, 123,814.76 and 49,434.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,721.27 : 123,814.76 = 49,434.12 : x
2. Step 2: Convert to fraction form
   89,721.27/123,814.76 = 49,434.12/x
3. Step 3: Cross multiply
   89,721.27x = 123,814.76 × 49,434.12
4. Step 4: Simplify right side
   89,721.27x = 6,120,673,456.44
5. Step 5: Solve for x
   x = 6,120,673,456.44/89,721.27
6. Step 6: Final answer
   x = 68,218.76