Finding the Fourth Proportional to 81,172.83, 111,945.97 and 50,960.96

Step by Step Solution

1. Step 1: Write the proportion equation
   81,172.83 : 111,945.97 = 50,960.96 : x
2. Step 2: Convert to fraction form
   81,172.83/111,945.97 = 50,960.96/x
3. Step 3: Cross multiply
   81,172.83x = 111,945.97 × 50,960.96
4. Step 4: Simplify right side
   81,172.83x = 5,704,874,099.33
5. Step 5: Solve for x
   x = 5,704,874,099.33/81,172.83
6. Step 6: Final answer
   x = 70,280.59