Finding the Fourth Proportional to 89,819, 123,944.52 and 51,551.61

Step by Step Solution

1. Step 1: Write the proportion equation
   89,819 : 123,944.52 = 51,551.61 : x
2. Step 2: Convert to fraction form
   89,819/123,944.52 = 51,551.61/x
3. Step 3: Cross multiply
   89,819x = 123,944.52 × 51,551.61
4. Step 4: Simplify right side
   89,819x = 6,389,539,556.68
5. Step 5: Solve for x
   x = 6,389,539,556.68/89,819
6. Step 6: Final answer
   x = 71,137.95