Finding the Fourth Proportional to 67,139.82, 100,515.33 and 50,569.65

Step by Step Solution

1. Step 1: Write the proportion equation
   67,139.82 : 100,515.33 = 50,569.65 : x
2. Step 2: Convert to fraction form
   67,139.82/100,515.33 = 50,569.65/x
3. Step 3: Cross multiply
   67,139.82x = 100,515.33 × 50,569.65
4. Step 4: Simplify right side
   67,139.82x = 5,083,025,057.73
5. Step 5: Solve for x
   x = 5,083,025,057.73/67,139.82
6. Step 6: Final answer
   x = 75,708.05