Finding the Fourth Proportional to 81,480.36, 112,436.82 and 49,644.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,480.36 : 112,436.82 = 49,644.12 : x
2. Step 2: Convert to fraction form
   81,480.36/112,436.82 = 49,644.12/x
3. Step 3: Cross multiply
   81,480.36x = 112,436.82 × 49,644.12
4. Step 4: Simplify right side
   81,480.36x = 5,581,826,984.50
5. Step 5: Solve for x
   x = 5,581,826,984.50/81,480.36
6. Step 6: Final answer
   x = 68,505.18