Finding the Fourth Proportional to 161,735, 223,198.62 and 90,118.04

Step by Step Solution

1. Step 1: Write the proportion equation
   161,735 : 223,198.62 = 90,118.04 : x
2. Step 2: Convert to fraction form
   161,735/223,198.62 = 90,118.04/x
3. Step 3: Cross multiply
   161,735x = 223,198.62 × 90,118.04
4. Step 4: Simplify right side
   161,735x = 20,114,222,165.10
5. Step 5: Solve for x
   x = 20,114,222,165.10/161,735
6. Step 6: Final answer
   x = 124,365.30