Finding the Fourth Proportional to 51,333.45, 70,839.41 and 28,672.76

Step by Step Solution

1. Step 1: Write the proportion equation
   51,333.45 : 70,839.41 = 28,672.76 : x
2. Step 2: Convert to fraction form
   51,333.45/70,839.41 = 28,672.76/x
3. Step 3: Cross multiply
   51,333.45x = 70,839.41 × 28,672.76
4. Step 4: Simplify right side
   51,333.45x = 2,031,161,401.47
5. Step 5: Solve for x
   x = 2,031,161,401.47/51,333.45
6. Step 6: Final answer
   x = 39,567.99