Finding the Fourth Proportional to 361,644.63, 499,068.77 and 200,495.54

Step by Step Solution

1. Step 1: Write the proportion equation
   361,644.63 : 499,068.77 = 200,495.54 : x
2. Step 2: Convert to fraction form
   361,644.63/499,068.77 = 200,495.54/x
3. Step 3: Cross multiply
   361,644.63x = 499,068.77 × 200,495.54
4. Step 4: Simplify right side
   361,644.63x = 100,061,059,040.46
5. Step 5: Solve for x
   x = 100,061,059,040.46/361,644.63
6. Step 6: Final answer
   x = 276,683.38