Finding the Fourth Proportional to 250,499.82, 345,713.70 and 143,085.90

Step by Step Solution

1. Step 1: Write the proportion equation
   250,499.82 : 345,713.70 = 143,085.90 : x
2. Step 2: Convert to fraction form
   250,499.82/345,713.70 = 143,085.90/x
3. Step 3: Cross multiply
   250,499.82x = 345,713.70 × 143,085.90
4. Step 4: Simplify right side
   250,499.82x = 49,466,755,906.83
5. Step 5: Solve for x
   x = 49,466,755,906.83/250,499.82
6. Step 6: Final answer
   x = 197,472.22