Finding the Fourth Proportional to 89,019.41, 122,930.06 and 57,243.51

Step by Step Solution

1. Step 1: Write the proportion equation
   89,019.41 : 122,930.06 = 57,243.51 : x
2. Step 2: Convert to fraction form
   89,019.41/122,930.06 = 57,243.51/x
3. Step 3: Cross multiply
   89,019.41x = 122,930.06 × 57,243.51
4. Step 4: Simplify right side
   89,019.41x = 7,036,947,832.69
5. Step 5: Solve for x
   x = 7,036,947,832.69/89,019.41
6. Step 6: Final answer
   x = 79,049.59