Finding the Fourth Proportional to 82,989.28, 114,488.16 and 51,146.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,989.28 : 114,488.16 = 51,146.56 : x
2. Step 2: Convert to fraction form
   82,989.28/114,488.16 = 51,146.56/x
3. Step 3: Cross multiply
   82,989.28x = 114,488.16 × 51,146.56
4. Step 4: Simplify right side
   82,989.28x = 5,855,675,544.73
5. Step 5: Solve for x
   x = 5,855,675,544.73/82,989.28
6. Step 6: Final answer
   x = 70,559.42