Finding the Fourth Proportional to 51,149.30, 70,588.24 and 28,488.30

Step by Step Solution

1. Step 1: Write the proportion equation
   51,149.30 : 70,588.24 = 28,488.30 : x
2. Step 2: Convert to fraction form
   51,149.30/70,588.24 = 28,488.30/x
3. Step 3: Cross multiply
   51,149.30x = 70,588.24 × 28,488.30
4. Step 4: Simplify right side
   51,149.30x = 2,010,939,018.72
5. Step 5: Solve for x
   x = 2,010,939,018.72/51,149.30
6. Step 6: Final answer
   x = 39,315.08