Finding the Fourth Proportional to 51,012.72, 70,404.12 and 28,661.04

Step by Step Solution

1. Step 1: Write the proportion equation
   51,012.72 : 70,404.12 = 28,661.04 : x
2. Step 2: Convert to fraction form
   51,012.72/70,404.12 = 28,661.04/x
3. Step 3: Cross multiply
   51,012.72x = 70,404.12 × 28,661.04
4. Step 4: Simplify right side
   51,012.72x = 2,017,855,299.48
5. Step 5: Solve for x
   x = 2,017,855,299.48/51,012.72
6. Step 6: Final answer
   x = 39,555.92