Finding the Fourth Proportional to 214,019.72, 321,072.78 and 147,491.72

Step by Step Solution

1. Step 1: Write the proportion equation
   214,019.72 : 321,072.78 = 147,491.72 : x
2. Step 2: Convert to fraction form
   214,019.72/321,072.78 = 147,491.72/x
3. Step 3: Cross multiply
   214,019.72x = 321,072.78 × 147,491.72
4. Step 4: Simplify right side
   214,019.72x = 47,355,576,567.38
5. Step 5: Solve for x
   x = 47,355,576,567.38/214,019.72
6. Step 6: Final answer
   x = 221,267.35