Finding the Fourth Proportional to 89,818.91, 123,944.43 and 51,551.54

Step by Step Solution

1. Step 1: Write the proportion equation
   89,818.91 : 123,944.43 = 51,551.54 : x
2. Step 2: Convert to fraction form
   89,818.91/123,944.43 = 51,551.54/x
3. Step 3: Cross multiply
   89,818.91x = 123,944.43 × 51,551.54
4. Step 4: Simplify right side
   89,818.91x = 6,389,525,989.33
5. Step 5: Solve for x
   x = 6,389,525,989.33/89,818.91
6. Step 6: Final answer
   x = 71,137.87