Finding the Fourth Proportional to 300,882.24, 451,026.50 and 143,221.41

Step by Step Solution

1. Step 1: Write the proportion equation
   300,882.24 : 451,026.50 = 143,221.41 : x
2. Step 2: Convert to fraction form
   300,882.24/451,026.50 = 143,221.41/x
3. Step 3: Cross multiply
   300,882.24x = 451,026.50 × 143,221.41
4. Step 4: Simplify right side
   300,882.24x = 64,596,650,561.26
5. Step 5: Solve for x
   x = 64,596,650,561.26/300,882.24
6. Step 6: Final answer
   x = 214,690.81