Finding the Fourth Proportional to 343,012.30, 514,518.69 and 143,223.82

Step by Step Solution

1. Step 1: Write the proportion equation
   343,012.30 : 514,518.69 = 143,223.82 : x
2. Step 2: Convert to fraction form
   343,012.30/514,518.69 = 143,223.82/x
3. Step 3: Cross multiply
   343,012.30x = 514,518.69 × 143,223.82
4. Step 4: Simplify right side
   343,012.30x = 73,691,332,243.20
5. Step 5: Solve for x
   x = 73,691,332,243.20/343,012.30
6. Step 6: Final answer
   x = 214,835.83