Finding the Fourth Proportional to 89,780.56, 123,894.70 and 49,494.33

Step by Step Solution

1. Step 1: Write the proportion equation
   89,780.56 : 123,894.70 = 49,494.33 : x
2. Step 2: Convert to fraction form
   89,780.56/123,894.70 = 49,494.33/x
3. Step 3: Cross multiply
   89,780.56x = 123,894.70 × 49,494.33
4. Step 4: Simplify right side
   89,780.56x = 6,132,085,043.32
5. Step 5: Solve for x
   x = 6,132,085,043.32/89,780.56
6. Step 6: Final answer
   x = 68,300.81