Finding the Fourth Proportional to 370,146.09, 510,801.78 and 200,380.22

Step by Step Solution

1. Step 1: Write the proportion equation
   370,146.09 : 510,801.78 = 200,380.22 : x
2. Step 2: Convert to fraction form
   370,146.09/510,801.78 = 200,380.22/x
3. Step 3: Cross multiply
   370,146.09x = 510,801.78 × 200,380.22
4. Step 4: Simplify right side
   370,146.09x = 102,354,570,498.78
5. Step 5: Solve for x
   x = 102,354,570,498.78/370,146.09
6. Step 6: Final answer
   x = 276,524.79