Finding the Fourth Proportional to 51,063.57, 70,467.72 and 28,707.57

Step by Step Solution

1. Step 1: Write the proportion equation
   51,063.57 : 70,467.72 = 28,707.57 : x
2. Step 2: Convert to fraction form
   51,063.57/70,467.72 = 28,707.57/x
3. Step 3: Cross multiply
   51,063.57x = 70,467.72 × 28,707.57
4. Step 4: Simplify right side
   51,063.57x = 2,022,957,004.64
5. Step 5: Solve for x
   x = 2,022,957,004.64/51,063.57
6. Step 6: Final answer
   x = 39,616.44