Finding the Fourth Proportional to 50,247.78, 69,319.72 and 31,122.48

Step by Step Solution

1. Step 1: Write the proportion equation
   50,247.78 : 69,319.72 = 31,122.48 : x
2. Step 2: Convert to fraction form
   50,247.78/69,319.72 = 31,122.48/x
3. Step 3: Cross multiply
   50,247.78x = 69,319.72 × 31,122.48
4. Step 4: Simplify right side
   50,247.78x = 2,157,401,599.31
5. Step 5: Solve for x
   x = 2,157,401,599.31/50,247.78
6. Step 6: Final answer
   x = 42,935.26