Finding the Fourth Proportional to 215,300.58, 322,952.49 and 82,145.04

Step by Step Solution

1. Step 1: Write the proportion equation
   215,300.58 : 322,952.49 = 82,145.04 : x
2. Step 2: Convert to fraction form
   215,300.58/322,952.49 = 82,145.04/x
3. Step 3: Cross multiply
   215,300.58x = 322,952.49 × 82,145.04
4. Step 4: Simplify right side
   215,300.58x = 26,528,945,209.15
5. Step 5: Solve for x
   x = 26,528,945,209.15/215,300.58
6. Step 6: Final answer
   x = 123,218.18