Finding the Fourth Proportional to 81,698.91, 112,756.77 and 49,886.16

Step by Step Solution

1. Step 1: Write the proportion equation
   81,698.91 : 112,756.77 = 49,886.16 : x
2. Step 2: Convert to fraction form
   81,698.91/112,756.77 = 49,886.16/x
3. Step 3: Cross multiply
   81,698.91x = 112,756.77 × 49,886.16
4. Step 4: Simplify right side
   81,698.91x = 5,625,002,269.30
5. Step 5: Solve for x
   x = 5,625,002,269.30/81,698.91
6. Step 6: Final answer
   x = 68,850.40