Finding the Fourth Proportional to 258,103.58, 355,359.03 and 220,225.82

Step by Step Solution

1. Step 1: Write the proportion equation
   258,103.58 : 355,359.03 = 220,225.82 : x
2. Step 2: Convert to fraction form
   258,103.58/355,359.03 = 220,225.82/x
3. Step 3: Cross multiply
   258,103.58x = 355,359.03 × 220,225.82
4. Step 4: Simplify right side
   258,103.58x = 78,259,233,776.15
5. Step 5: Solve for x
   x = 78,259,233,776.15/258,103.58
6. Step 6: Final answer
   x = 303,208.63