Finding the Fourth Proportional to 161,809.84, 222,789.42 and 137,563.10

Step by Step Solution

1. Step 1: Write the proportion equation
   161,809.84 : 222,789.42 = 137,563.10 : x
2. Step 2: Convert to fraction form
   161,809.84/222,789.42 = 137,563.10/x
3. Step 3: Cross multiply
   161,809.84x = 222,789.42 × 137,563.10
4. Step 4: Simplify right side
   161,809.84x = 30,647,603,262.40
5. Step 5: Solve for x
   x = 30,647,603,262.40/161,809.84
6. Step 6: Final answer
   x = 189,405.06