Finding the Fourth Proportional to 299,300.88, 413,105.91 and 172,050.30

Step by Step Solution

1. Step 1: Write the proportion equation
   299,300.88 : 413,105.91 = 172,050.30 : x
2. Step 2: Convert to fraction form
   299,300.88/413,105.91 = 172,050.30/x
3. Step 3: Cross multiply
   299,300.88x = 413,105.91 × 172,050.30
4. Step 4: Simplify right side
   299,300.88x = 71,074,995,747.27
5. Step 5: Solve for x
   x = 71,074,995,747.27/299,300.88
6. Step 6: Final answer
   x = 237,470.05