Finding the Fourth Proportional to 367,066.86, 550,578.15 and 218,254.15

Step by Step Solution

1. Step 1: Write the proportion equation
   367,066.86 : 550,578.15 = 218,254.15 : x
2. Step 2: Convert to fraction form
   367,066.86/550,578.15 = 218,254.15/x
3. Step 3: Cross multiply
   367,066.86x = 550,578.15 × 218,254.15
4. Step 4: Simplify right side
   367,066.86x = 120,165,966,136.82
5. Step 5: Solve for x
   x = 120,165,966,136.82/367,066.86
6. Step 6: Final answer
   x = 327,368.06