Finding the Fourth Proportional to 264,536.31, 365,061.15 and 143,679.61

Step by Step Solution

1. Step 1: Write the proportion equation
   264,536.31 : 365,061.15 = 143,679.61 : x
2. Step 2: Convert to fraction form
   264,536.31/365,061.15 = 143,679.61/x
3. Step 3: Cross multiply
   264,536.31x = 365,061.15 × 143,679.61
4. Step 4: Simplify right side
   264,536.31x = 52,451,845,545.31
5. Step 5: Solve for x
   x = 52,451,845,545.31/264,536.31
6. Step 6: Final answer
   x = 198,278.43