Finding the Fourth Proportional to 83,973.74, 115,831.69 and 49,959.20

Step by Step Solution

1. Step 1: Write the proportion equation
   83,973.74 : 115,831.69 = 49,959.20 : x
2. Step 2: Convert to fraction form
   83,973.74/115,831.69 = 49,959.20/x
3. Step 3: Cross multiply
   83,973.74x = 115,831.69 × 49,959.20
4. Step 4: Simplify right side
   83,973.74x = 5,786,858,731.73
5. Step 5: Solve for x
   x = 5,786,858,731.73/83,973.74
6. Step 6: Final answer
   x = 68,912.72