Finding the Fourth Proportional to 31,139.78, 46,717.09 and 10,079.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,139.78 : 46,717.09 = 10,079.83 : x
2. Step 2: Convert to fraction form
   31,139.78/46,717.09 = 10,079.83/x
3. Step 3: Cross multiply
   31,139.78x = 46,717.09 × 10,079.83
4. Step 4: Simplify right side
   31,139.78x = 470,900,183.30
5. Step 5: Solve for x
   x = 470,900,183.30/31,139.78
6. Step 6: Final answer
   x = 15,122.14