Finding the Fourth Proportional to 216,103.42, 323,989.89 and 178,545.34

Step by Step Solution

1. Step 1: Write the proportion equation
   216,103.42 : 323,989.89 = 178,545.34 : x
2. Step 2: Convert to fraction form
   216,103.42/323,989.89 = 178,545.34/x
3. Step 3: Cross multiply
   216,103.42x = 323,989.89 × 178,545.34
4. Step 4: Simplify right side
   216,103.42x = 57,846,885,066.61
5. Step 5: Solve for x
   x = 57,846,885,066.61/216,103.42
6. Step 6: Final answer
   x = 267,681.49