Finding the Fourth Proportional to 82,072.89, 113,241.30 and 49,806.78

Step by Step Solution

1. Step 1: Write the proportion equation
   82,072.89 : 113,241.30 = 49,806.78 : x
2. Step 2: Convert to fraction form
   82,072.89/113,241.30 = 49,806.78/x
3. Step 3: Cross multiply
   82,072.89x = 113,241.30 × 49,806.78
4. Step 4: Simplify right side
   82,072.89x = 5,640,183,949.81
5. Step 5: Solve for x
   x = 5,640,183,949.81/82,072.89
6. Step 6: Final answer
   x = 68,721.64