Finding the Fourth Proportional to 300,184.38, 450,276.53 and 142,326.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,184.38 : 450,276.53 = 142,326.72 : x
2. Step 2: Convert to fraction form
   300,184.38/450,276.53 = 142,326.72/x
3. Step 3: Cross multiply
   300,184.38x = 450,276.53 × 142,326.72
4. Step 4: Simplify right side
   300,184.38x = 64,086,380,896.25
5. Step 5: Solve for x
   x = 64,086,380,896.25/300,184.38
6. Step 6: Final answer
   x = 213,490.06