Finding the Fourth Proportional to 365,978.71, 504,935.53 and 204,808.15

Step by Step Solution

1. Step 1: Write the proportion equation
   365,978.71 : 504,935.53 = 204,808.15 : x
2. Step 2: Convert to fraction form
   365,978.71/504,935.53 = 204,808.15/x
3. Step 3: Cross multiply
   365,978.71x = 504,935.53 × 204,808.15
4. Step 4: Simplify right side
   365,978.71x = 103,414,911,768.57
5. Step 5: Solve for x
   x = 103,414,911,768.57/365,978.71
6. Step 6: Final answer
   x = 282,570.84