Finding the Fourth Proportional to 206,061.12, 308,940.48 and 65,738.88

Step by Step Solution

1. Step 1: Write the proportion equation
   206,061.12 : 308,940.48 = 65,738.88 : x
2. Step 2: Convert to fraction form
   206,061.12/308,940.48 = 65,738.88/x
3. Step 3: Cross multiply
   206,061.12x = 308,940.48 × 65,738.88
4. Step 4: Simplify right side
   206,061.12x = 20,309,401,141.86
5. Step 5: Solve for x
   x = 20,309,401,141.86/206,061.12
6. Step 6: Final answer
   x = 98,560.08