Finding the Fourth Proportional to 301,648.84, 416,347.89 and 172,662.10

Step by Step Solution

1. Step 1: Write the proportion equation
   301,648.84 : 416,347.89 = 172,662.10 : x
2. Step 2: Convert to fraction form
   301,648.84/416,347.89 = 172,662.10/x
3. Step 3: Cross multiply
   301,648.84x = 416,347.89 × 172,662.10
4. Step 4: Simplify right side
   301,648.84x = 71,887,498,936.23
5. Step 5: Solve for x
   x = 71,887,498,936.23/301,648.84
6. Step 6: Final answer
   x = 238,315.18