Finding the Fourth Proportional to 82,099.28, 113,256.90 and 51,870.08

Step by Step Solution

1. Step 1: Write the proportion equation
   82,099.28 : 113,256.90 = 51,870.08 : x
2. Step 2: Convert to fraction form
   82,099.28/113,256.90 = 51,870.08/x
3. Step 3: Cross multiply
   82,099.28x = 113,256.90 × 51,870.08
4. Step 4: Simplify right side
   82,099.28x = 5,874,644,463.55
5. Step 5: Solve for x
   x = 5,874,644,463.55/82,099.28
6. Step 6: Final answer
   x = 71,555.37