Finding the Fourth Proportional to 90,391.94, 124,727.78 and 50,105.69

Step by Step Solution

1. Step 1: Write the proportion equation
   90,391.94 : 124,727.78 = 50,105.69 : x
2. Step 2: Convert to fraction form
   90,391.94/124,727.78 = 50,105.69/x
3. Step 3: Cross multiply
   90,391.94x = 124,727.78 × 50,105.69
4. Step 4: Simplify right side
   90,391.94x = 6,249,571,479.07
5. Step 5: Solve for x
   x = 6,249,571,479.07/90,391.94
6. Step 6: Final answer
   x = 69,138.59