Finding the Fourth Proportional to 89,843.69, 123,984.06 and 51,605.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89,843.69 : 123,984.06 = 51,605.75 : x
2. Step 2: Convert to fraction form
   89,843.69/123,984.06 = 51,605.75/x
3. Step 3: Cross multiply
   89,843.69x = 123,984.06 × 51,605.75
4. Step 4: Simplify right side
   89,843.69x = 6,398,290,404.35
5. Step 5: Solve for x
   x = 6,398,290,404.35/89,843.69
6. Step 6: Final answer
   x = 71,215.80