Finding the Fourth Proportional to 50,086.72, 69,119.70 and 31,223.92

Step by Step Solution

1. Step 1: Write the proportion equation
   50,086.72 : 69,119.70 = 31,223.92 : x
2. Step 2: Convert to fraction form
   50,086.72/69,119.70 = 31,223.92/x
3. Step 3: Cross multiply
   50,086.72x = 69,119.70 × 31,223.92
4. Step 4: Simplify right side
   50,086.72x = 2,158,187,983.22
5. Step 5: Solve for x
   x = 2,158,187,983.22/50,086.72
6. Step 6: Final answer
   x = 43,089.03