Finding the Fourth Proportional to 191,320.38, 264,386.28 and 143,490.69

Step by Step Solution

1. Step 1: Write the proportion equation
   191,320.38 : 264,386.28 = 143,490.69 : x
2. Step 2: Convert to fraction form
   191,320.38/264,386.28 = 143,490.69/x
3. Step 3: Cross multiply
   191,320.38x = 264,386.28 × 143,490.69
4. Step 4: Simplify right side
   191,320.38x = 37,936,969,743.73
5. Step 5: Solve for x
   x = 37,936,969,743.73/191,320.38
6. Step 6: Final answer
   x = 198,290.27