Finding the Fourth Proportional to 89,539.80, 123,555.22 and 51,807

Step by Step Solution

1. Step 1: Write the proportion equation
   89,539.80 : 123,555.22 = 51,807 : x
2. Step 2: Convert to fraction form
   89,539.80/123,555.22 = 51,807/x
3. Step 3: Cross multiply
   89,539.80x = 123,555.22 × 51,807
4. Step 4: Simplify right side
   89,539.80x = 6,401,025,282.54
5. Step 5: Solve for x
   x = 6,401,025,282.54/89,539.80
6. Step 6: Final answer
   x = 71,488.05