Finding the Fourth Proportional to 300,004.28, 450,227.88 and 142,233.32

Step by Step Solution

1. Step 1: Write the proportion equation
   300,004.28 : 450,227.88 = 142,233.32 : x
2. Step 2: Convert to fraction form
   300,004.28/450,227.88 = 142,233.32/x
3. Step 3: Cross multiply
   300,004.28x = 450,227.88 × 142,233.32
4. Step 4: Simplify right side
   300,004.28x = 64,037,406,128.96
5. Step 5: Solve for x
   x = 64,037,406,128.96/300,004.28
6. Step 6: Final answer
   x = 213,454.98