Finding the Fourth Proportional to 214,313.05, 321,061.29 and 133,131.61

Step by Step Solution

1. Step 1: Write the proportion equation
   214,313.05 : 321,061.29 = 133,131.61 : x
2. Step 2: Convert to fraction form
   214,313.05/321,061.29 = 133,131.61/x
3. Step 3: Cross multiply
   214,313.05x = 321,061.29 × 133,131.61
4. Step 4: Simplify right side
   214,313.05x = 42,743,406,446.38
5. Step 5: Solve for x
   x = 42,743,406,446.38/214,313.05
6. Step 6: Final answer
   x = 199,443.79