Finding the Fourth Proportional to 89,564.54, 123,603.57 and 51,328.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89,564.54 : 123,603.57 = 51,328.49 : x
2. Step 2: Convert to fraction form
   89,564.54/123,603.57 = 51,328.49/x
3. Step 3: Cross multiply
   89,564.54x = 123,603.57 × 51,328.49
4. Step 4: Simplify right side
   89,564.54x = 6,344,383,988.69
5. Step 5: Solve for x
   x = 6,344,383,988.69/89,564.54
6. Step 6: Final answer
   x = 70,835.89