Finding the Fourth Proportional to 51,557.49, 71,145.81 and 28,892.61

Step by Step Solution

1. Step 1: Write the proportion equation
   51,557.49 : 71,145.81 = 28,892.61 : x
2. Step 2: Convert to fraction form
   51,557.49/71,145.81 = 28,892.61/x
3. Step 3: Cross multiply
   51,557.49x = 71,145.81 × 28,892.61
4. Step 4: Simplify right side
   51,557.49x = 2,055,588,141.46
5. Step 5: Solve for x
   x = 2,055,588,141.46/51,557.49
6. Step 6: Final answer
   x = 39,869.83