Finding the Fourth Proportional to 83,879, 115,714.88 and 49,868.19

Step by Step Solution

1. Step 1: Write the proportion equation
   83,879 : 115,714.88 = 49,868.19 : x
2. Step 2: Convert to fraction form
   83,879/115,714.88 = 49,868.19/x
3. Step 3: Cross multiply
   83,879x = 115,714.88 × 49,868.19
4. Step 4: Simplify right side
   83,879x = 5,770,491,621.67
5. Step 5: Solve for x
   x = 5,770,491,621.67/83,879
6. Step 6: Final answer
   x = 68,795.43