Finding the Fourth Proportional to 300,111.92, 449,668.04 and 211,178.56

Step by Step Solution

1. Step 1: Write the proportion equation
   300,111.92 : 449,668.04 = 211,178.56 : x
2. Step 2: Convert to fraction form
   300,111.92/449,668.04 = 211,178.56/x
3. Step 3: Cross multiply
   300,111.92x = 449,668.04 × 211,178.56
4. Step 4: Simplify right side
   300,111.92x = 94,960,249,016.17
5. Step 5: Solve for x
   x = 94,960,249,016.17/300,111.92
6. Step 6: Final answer
   x = 316,416.12