Finding the Fourth Proportional to 323,066.46, 445,799.51 and 187,144.07

Step by Step Solution

1. Step 1: Write the proportion equation
   323,066.46 : 445,799.51 = 187,144.07 : x
2. Step 2: Convert to fraction form
   323,066.46/445,799.51 = 187,144.07/x
3. Step 3: Cross multiply
   323,066.46x = 445,799.51 × 187,144.07
4. Step 4: Simplify right side
   323,066.46x = 83,428,731,540.69
5. Step 5: Solve for x
   x = 83,428,731,540.69/323,066.46
6. Step 6: Final answer
   x = 258,240.15