Finding the Fourth Proportional to 262,612, 362,404.56 and 143,380

Step by Step Solution

1. Step 1: Write the proportion equation
   262,612 : 362,404.56 = 143,380 : x
2. Step 2: Convert to fraction form
   262,612/362,404.56 = 143,380/x
3. Step 3: Cross multiply
   262,612x = 362,404.56 × 143,380
4. Step 4: Simplify right side
   262,612x = 51,961,565,812.80
5. Step 5: Solve for x
   x = 51,961,565,812.80/262,612
6. Step 6: Final answer
   x = 197,864.40