Finding the Fourth Proportional to 410,105,617.31, 565,947,477.50 and 221,933,920.34

Step by Step Solution

1. Step 1: Write the proportion equation
   410,105,617.31 : 565,947,477.50 = 221,933,920.34 : x
2. Step 2: Convert to fraction form
   410,105,617.31/565,947,477.50 = 221,933,920.34/x
3. Step 3: Cross multiply
   410,105,617.31x = 565,947,477.50 × 221,933,920.34
4. Step 4: Simplify right side
   410,105,617.31x = 125,602,942,388,414,144
5. Step 5: Solve for x
   x = 125,602,942,388,414,144/410,105,617.31
6. Step 6: Final answer
   x = 306,269,743.91