Finding the Fourth Proportional to 49,608.42, 68,432.35 and 31,425.85

Step by Step Solution

1. Step 1: Write the proportion equation
   49,608.42 : 68,432.35 = 31,425.85 : x
2. Step 2: Convert to fraction form
   49,608.42/68,432.35 = 31,425.85/x
3. Step 3: Cross multiply
   49,608.42x = 68,432.35 × 31,425.85
4. Step 4: Simplify right side
   49,608.42x = 2,150,544,766.25
5. Step 5: Solve for x
   x = 2,150,544,766.25/49,608.42
6. Step 6: Final answer
   x = 43,350.40