Finding the Fourth Proportional to 89,789.15, 123,909.01 and 51,551.19

Step by Step Solution

1. Step 1: Write the proportion equation
   89,789.15 : 123,909.01 = 51,551.19 : x
2. Step 2: Convert to fraction form
   89,789.15/123,909.01 = 51,551.19/x
3. Step 3: Cross multiply
   89,789.15x = 123,909.01 × 51,551.19
4. Step 4: Simplify right side
   89,789.15x = 6,387,656,788.34
5. Step 5: Solve for x
   x = 6,387,656,788.34/89,789.15
6. Step 6: Final answer
   x = 71,140.63