Finding the Fourth Proportional to 51,019.38, 70,406.37 and 28,663.38

Step by Step Solution

1. Step 1: Write the proportion equation
   51,019.38 : 70,406.37 = 28,663.38 : x
2. Step 2: Convert to fraction form
   51,019.38/70,406.37 = 28,663.38/x
3. Step 3: Cross multiply
   51,019.38x = 70,406.37 × 28,663.38
4. Step 4: Simplify right side
   51,019.38x = 2,018,084,537.73
5. Step 5: Solve for x
   x = 2,018,084,537.73/51,019.38
6. Step 6: Final answer
   x = 39,555.25