Finding the Fourth Proportional to 50,257.56, 69,355.68 and 31,405.56

Step by Step Solution

1. Step 1: Write the proportion equation
   50,257.56 : 69,355.68 = 31,405.56 : x
2. Step 2: Convert to fraction form
   50,257.56/69,355.68 = 31,405.56/x
3. Step 3: Cross multiply
   50,257.56x = 69,355.68 × 31,405.56
4. Step 4: Simplify right side
   50,257.56x = 2,178,153,969.58
5. Step 5: Solve for x
   x = 2,178,153,969.58/50,257.56
6. Step 6: Final answer
   x = 43,339.83