Finding the Fourth Proportional to 81,788.03, 112,847.31 and 49,945.31

Step by Step Solution

1. Step 1: Write the proportion equation
   81,788.03 : 112,847.31 = 49,945.31 : x
2. Step 2: Convert to fraction form
   81,788.03/112,847.31 = 49,945.31/x
3. Step 3: Cross multiply
   81,788.03x = 112,847.31 × 49,945.31
4. Step 4: Simplify right side
   81,788.03x = 5,636,193,316.38
5. Step 5: Solve for x
   x = 5,636,193,316.38/81,788.03
6. Step 6: Final answer
   x = 68,912.21