Finding the Fourth Proportional to 288,086.82, 397,559.55 and 160,763.10

Step by Step Solution

1. Step 1: Write the proportion equation
   288,086.82 : 397,559.55 = 160,763.10 : x
2. Step 2: Convert to fraction form
   288,086.82/397,559.55 = 160,763.10/x
3. Step 3: Cross multiply
   288,086.82x = 397,559.55 × 160,763.10
4. Step 4: Simplify right side
   288,086.82x = 63,912,905,692.61
5. Step 5: Solve for x
   x = 63,912,905,692.61/288,086.82
6. Step 6: Final answer
   x = 221,852.93