Finding the Fourth Proportional to 89,443.45, 123,443.67 and 57,704.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,443.45 : 123,443.67 = 57,704.68 : x
2. Step 2: Convert to fraction form
   89,443.45/123,443.67 = 57,704.68/x
3. Step 3: Cross multiply
   89,443.45x = 123,443.67 × 57,704.68
4. Step 4: Simplify right side
   89,443.45x = 7,123,277,475.38
5. Step 5: Solve for x
   x = 7,123,277,475.38/89,443.45
6. Step 6: Final answer
   x = 79,640.01