Finding the Fourth Proportional to 231,923, 320,053.74 and 131,321

Step by Step Solution

1. Step 1: Write the proportion equation
   231,923 : 320,053.74 = 131,321 : x
2. Step 2: Convert to fraction form
   231,923/320,053.74 = 131,321/x
3. Step 3: Cross multiply
   231,923x = 320,053.74 × 131,321
4. Step 4: Simplify right side
   231,923x = 42,029,777,190.54
5. Step 5: Solve for x
   x = 42,029,777,190.54/231,923
6. Step 6: Final answer
   x = 181,222.98