Finding the Fourth Proportional to 89,780.48, 123,892.06 and 49,494.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,780.48 : 123,892.06 = 49,494.18 : x
2. Step 2: Convert to fraction form
   89,780.48/123,892.06 = 49,494.18/x
3. Step 3: Cross multiply
   89,780.48x = 123,892.06 × 49,494.18
4. Step 4: Simplify right side
   89,780.48x = 6,131,935,918.21
5. Step 5: Solve for x
   x = 6,131,935,918.21/89,780.48
6. Step 6: Final answer
   x = 68,299.21