Finding the Fourth Proportional to 51,429.56, 70,979.36 and 28,769.81

Step by Step Solution

1. Step 1: Write the proportion equation
   51,429.56 : 70,979.36 = 28,769.81 : x
2. Step 2: Convert to fraction form
   51,429.56/70,979.36 = 28,769.81/x
3. Step 3: Cross multiply
   51,429.56x = 70,979.36 × 28,769.81
4. Step 4: Simplify right side
   51,429.56x = 2,042,062,557.27
5. Step 5: Solve for x
   x = 2,042,062,557.27/51,429.56
6. Step 6: Final answer
   x = 39,706.01