Finding the Fourth Proportional to 50,243.50, 69,336.30 and 31,391.56

Step by Step Solution

1. Step 1: Write the proportion equation
   50,243.50 : 69,336.30 = 31,391.56 : x
2. Step 2: Convert to fraction form
   50,243.50/69,336.30 = 31,391.56/x
3. Step 3: Cross multiply
   50,243.50x = 69,336.30 × 31,391.56
4. Step 4: Simplify right side
   50,243.50x = 2,176,574,621.63
5. Step 5: Solve for x
   x = 2,176,574,621.63/50,243.50
6. Step 6: Final answer
   x = 43,320.52