Finding the Fourth Proportional to 376,569, 565,086.94 and 218,871.72

Step by Step Solution

1. Step 1: Write the proportion equation
   376,569 : 565,086.94 = 218,871.72 : x
2. Step 2: Convert to fraction form
   376,569/565,086.94 = 218,871.72/x
3. Step 3: Cross multiply
   376,569x = 565,086.94 × 218,871.72
4. Step 4: Simplify right side
   376,569x = 123,681,550,507.34
5. Step 5: Solve for x
   x = 123,681,550,507.34/376,569
6. Step 6: Final answer
   x = 328,443.26