Finding the Fourth Proportional to 82,163.91, 123,299.72 and 28,854.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,163.91 : 123,299.72 = 28,854.50 : x
2. Step 2: Convert to fraction form
   82,163.91/123,299.72 = 28,854.50/x
3. Step 3: Cross multiply
   82,163.91x = 123,299.72 × 28,854.50
4. Step 4: Simplify right side
   82,163.91x = 3,557,751,118.17
5. Step 5: Solve for x
   x = 3,557,751,118.17/82,163.91
6. Step 6: Final answer
   x = 43,300.65