Finding the Fourth Proportional to 51,558.81, 71,144.83 and 31,408.37

Step by Step Solution

1. Step 1: Write the proportion equation
   51,558.81 : 71,144.83 = 31,408.37 : x
2. Step 2: Convert to fraction form
   51,558.81/71,144.83 = 31,408.37/x
3. Step 3: Cross multiply
   51,558.81x = 71,144.83 × 31,408.37
4. Step 4: Simplify right side
   51,558.81x = 2,234,543,144.23
5. Step 5: Solve for x
   x = 2,234,543,144.23/51,558.81
6. Step 6: Final answer
   x = 43,339.70