Finding the Fourth Proportional to 300,002.28, 450,224.88 and 142,231.32

Step by Step Solution

1. Step 1: Write the proportion equation
   300,002.28 : 450,224.88 = 142,231.32 : x
2. Step 2: Convert to fraction form
   300,002.28/450,224.88 = 142,231.32/x
3. Step 3: Cross multiply
   300,002.28x = 450,224.88 × 142,231.32
4. Step 4: Simplify right side
   300,002.28x = 64,036,078,979.24
5. Step 5: Solve for x
   x = 64,036,078,979.24/300,002.28
6. Step 6: Final answer
   x = 213,451.97