Finding the Fourth Proportional to 361,055.27, 498,271.82 and 199,910.30

Step by Step Solution

1. Step 1: Write the proportion equation
   361,055.27 : 498,271.82 = 199,910.30 : x
2. Step 2: Convert to fraction form
   361,055.27/498,271.82 = 199,910.30/x
3. Step 3: Cross multiply
   361,055.27x = 498,271.82 × 199,910.30
4. Step 4: Simplify right side
   361,055.27x = 99,609,665,526.84
5. Step 5: Solve for x
   x = 99,609,665,526.84/361,055.27
6. Step 6: Final answer
   x = 275,884.82