Finding the Fourth Proportional to 310,333, 428,259.54 and 169,021

Step by Step Solution

1. Step 1: Write the proportion equation
   310,333 : 428,259.54 = 169,021 : x
2. Step 2: Convert to fraction form
   310,333/428,259.54 = 169,021/x
3. Step 3: Cross multiply
   310,333x = 428,259.54 × 169,021
4. Step 4: Simplify right side
   310,333x = 72,384,855,710.34
5. Step 5: Solve for x
   x = 72,384,855,710.34/310,333
6. Step 6: Final answer
   x = 233,248.98