Finding the Fourth Proportional to 89,557.47, 123,505.43 and 55,571.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89,557.47 : 123,505.43 = 55,571.49 : x
2. Step 2: Convert to fraction form
   89,557.47/123,505.43 = 55,571.49/x
3. Step 3: Cross multiply
   89,557.47x = 123,505.43 × 55,571.49
4. Step 4: Simplify right side
   89,557.47x = 6,863,380,490.33
5. Step 5: Solve for x
   x = 6,863,380,490.33/89,557.47
6. Step 6: Final answer
   x = 76,636.61