Finding the Fourth Proportional to 82,253.28, 113,511.60 and 50,439.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,253.28 : 113,511.60 = 50,439.72 : x
2. Step 2: Convert to fraction form
   82,253.28/113,511.60 = 50,439.72/x
3. Step 3: Cross multiply
   82,253.28x = 113,511.60 × 50,439.72
4. Step 4: Simplify right side
   82,253.28x = 5,725,493,320.75
5. Step 5: Solve for x
   x = 5,725,493,320.75/82,253.28
6. Step 6: Final answer
   x = 69,608.09