Finding the Fourth Proportional to 299,805.72, 413,747.91 and 172,500.72

Step by Step Solution

1. Step 1: Write the proportion equation
   299,805.72 : 413,747.91 = 172,500.72 : x
2. Step 2: Convert to fraction form
   299,805.72/413,747.91 = 172,500.72/x
3. Step 3: Cross multiply
   299,805.72x = 413,747.91 × 172,500.72
4. Step 4: Simplify right side
   299,805.72x = 71,371,812,373.50
5. Step 5: Solve for x
   x = 71,371,812,373.50/299,805.72
6. Step 6: Final answer
   x = 238,060.21