Finding the Fourth Proportional to 85,144.50, 117,499.38 and 49,355.28

Step by Step Solution

1. Step 1: Write the proportion equation
   85,144.50 : 117,499.38 = 49,355.28 : x
2. Step 2: Convert to fraction form
   85,144.50/117,499.38 = 49,355.28/x
3. Step 3: Cross multiply
   85,144.50x = 117,499.38 × 49,355.28
4. Step 4: Simplify right side
   85,144.50x = 5,799,214,799.73
5. Step 5: Solve for x
   x = 5,799,214,799.73/85,144.50
6. Step 6: Final answer
   x = 68,110.27