Finding the Fourth Proportional to 51,499.15, 71,075.52 and 28,846.78

Step by Step Solution

1. Step 1: Write the proportion equation
   51,499.15 : 71,075.52 = 28,846.78 : x
2. Step 2: Convert to fraction form
   51,499.15/71,075.52 = 28,846.78/x
3. Step 3: Cross multiply
   51,499.15x = 71,075.52 × 28,846.78
4. Step 4: Simplify right side
   51,499.15x = 2,050,299,711.14
5. Step 5: Solve for x
   x = 2,050,299,711.14/51,499.15
6. Step 6: Final answer
   x = 39,812.30