Finding the Fourth Proportional to 83,828.05, 115,676.90 and 49,834.78

Step by Step Solution

1. Step 1: Write the proportion equation
   83,828.05 : 115,676.90 = 49,834.78 : x
2. Step 2: Convert to fraction form
   83,828.05/115,676.90 = 49,834.78/x
3. Step 3: Cross multiply
   83,828.05x = 115,676.90 × 49,834.78
4. Step 4: Simplify right side
   83,828.05x = 5,764,732,862.58
5. Step 5: Solve for x
   x = 5,764,732,862.58/83,828.05
6. Step 6: Final answer
   x = 68,768.54