Finding the Fourth Proportional to 404,700.30, 606,564.45 and 167,921.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,700.30 : 606,564.45 = 167,921.10 : x
2. Step 2: Convert to fraction form
   404,700.30/606,564.45 = 167,921.10/x
3. Step 3: Cross multiply
   404,700.30x = 606,564.45 × 167,921.10
4. Step 4: Simplify right side
   404,700.30x = 101,854,969,664.90
5. Step 5: Solve for x
   x = 101,854,969,664.90/404,700.30
6. Step 6: Final answer
   x = 251,680.00