Finding the Fourth Proportional to 345,879.50, 477,321 and 194,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,879.50 : 477,321 = 194,976.50 : x
2. Step 2: Convert to fraction form
   345,879.50/477,321 = 194,976.50/x
3. Step 3: Cross multiply
   345,879.50x = 477,321 × 194,976.50
4. Step 4: Simplify right side
   345,879.50x = 93,066,377,956.50
5. Step 5: Solve for x
   x = 93,066,377,956.50/345,879.50
6. Step 6: Final answer
   x = 269,071.68