Finding the Fourth Proportional to 342,934.33, 514,401.56 and 143,145.73

Step by Step Solution

1. Step 1: Write the proportion equation
   342,934.33 : 514,401.56 = 143,145.73 : x
2. Step 2: Convert to fraction form
   342,934.33/514,401.56 = 143,145.73/x
3. Step 3: Cross multiply
   342,934.33x = 514,401.56 × 143,145.73
4. Step 4: Simplify right side
   342,934.33x = 73,634,386,819.34
5. Step 5: Solve for x
   x = 73,634,386,819.34/342,934.33
6. Step 6: Final answer
   x = 214,718.62