Finding the Fourth Proportional to 201,016.50, 301,662.99 and 69,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,016.50 : 301,662.99 = 69,688.50 : x
2. Step 2: Convert to fraction form
   201,016.50/301,662.99 = 69,688.50/x
3. Step 3: Cross multiply
   201,016.50x = 301,662.99 × 69,688.50
4. Step 4: Simplify right side
   201,016.50x = 21,022,441,278.62
5. Step 5: Solve for x
   x = 21,022,441,278.62/201,016.50
6. Step 6: Final answer
   x = 104,580.68