Finding the Fourth Proportional to 71,429.37, 107,144.94 and 49,236.78

Step by Step Solution

1. Step 1: Write the proportion equation
   71,429.37 : 107,144.94 = 49,236.78 : x
2. Step 2: Convert to fraction form
   71,429.37/107,144.94 = 49,236.78/x
3. Step 3: Cross multiply
   71,429.37x = 107,144.94 × 49,236.78
4. Step 4: Simplify right side
   71,429.37x = 5,275,471,838.89
5. Step 5: Solve for x
   x = 5,275,471,838.89/71,429.37
6. Step 6: Final answer
   x = 73,855.78