Finding the Fourth Proportional to 51,012, 70,403.16 and 28,656

Step by Step Solution

1. Step 1: Write the proportion equation
   51,012 : 70,403.16 = 28,656 : x
2. Step 2: Convert to fraction form
   51,012/70,403.16 = 28,656/x
3. Step 3: Cross multiply
   51,012x = 70,403.16 × 28,656
4. Step 4: Simplify right side
   51,012x = 2,017,472,952.96
5. Step 5: Solve for x
   x = 2,017,472,952.96/51,012
6. Step 6: Final answer
   x = 39,548.99