Finding the Fourth Proportional to 262,743, 362,586.78 and 143,511

Step by Step Solution

1. Step 1: Write the proportion equation
   262,743 : 362,586.78 = 143,511 : x
2. Step 2: Convert to fraction form
   262,743/362,586.78 = 143,511/x
3. Step 3: Cross multiply
   262,743x = 362,586.78 × 143,511
4. Step 4: Simplify right side
   262,743x = 52,035,191,384.58
5. Step 5: Solve for x
   x = 52,035,191,384.58/262,743
6. Step 6: Final answer
   x = 198,045.97