Finding the Fourth Proportional to 369,906.58, 510,472.83 and 208,768.42

Step by Step Solution

1. Step 1: Write the proportion equation
   369,906.58 : 510,472.83 = 208,768.42 : x
2. Step 2: Convert to fraction form
   369,906.58/510,472.83 = 208,768.42/x
3. Step 3: Cross multiply
   369,906.58x = 510,472.83 × 208,768.42
4. Step 4: Simplify right side
   369,906.58x = 106,570,606,172.03
5. Step 5: Solve for x
   x = 106,570,606,172.03/369,906.58
6. Step 6: Final answer
   x = 288,101.41