Finding the Fourth Proportional to 89,839.43, 123,979.16 and 49,554.55

Step by Step Solution

1. Step 1: Write the proportion equation
   89,839.43 : 123,979.16 = 49,554.55 : x
2. Step 2: Convert to fraction form
   89,839.43/123,979.16 = 49,554.55/x
3. Step 3: Cross multiply
   89,839.43x = 123,979.16 × 49,554.55
4. Step 4: Simplify right side
   89,839.43x = 6,143,730,615.51
5. Step 5: Solve for x
   x = 6,143,730,615.51/89,839.43
6. Step 6: Final answer
   x = 68,385.68