Finding the Fourth Proportional to 89,683.50, 123,763.23 and 51,979.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89,683.50 : 123,763.23 = 51,979.62 : x
2. Step 2: Convert to fraction form
   89,683.50/123,763.23 = 51,979.62/x
3. Step 3: Cross multiply
   89,683.50x = 123,763.23 × 51,979.62
4. Step 4: Simplify right side
   89,683.50x = 6,433,165,665.37
5. Step 5: Solve for x
   x = 6,433,165,665.37/89,683.50
6. Step 6: Final answer
   x = 71,731.88