Finding the Fourth Proportional to 298,406.72, 411,776.16 and 171,053.12

Step by Step Solution

1. Step 1: Write the proportion equation
   298,406.72 : 411,776.16 = 171,053.12 : x
2. Step 2: Convert to fraction form
   298,406.72/411,776.16 = 171,053.12/x
3. Step 3: Cross multiply
   298,406.72x = 411,776.16 × 171,053.12
4. Step 4: Simplify right side
   298,406.72x = 70,435,596,909.62
5. Step 5: Solve for x
   x = 70,435,596,909.62/298,406.72
6. Step 6: Final answer
   x = 236,038.91