Finding the Fourth Proportional to 161,309, 222,606.42 and 90,653

Step by Step Solution

1. Step 1: Write the proportion equation
   161,309 : 222,606.42 = 90,653 : x
2. Step 2: Convert to fraction form
   161,309/222,606.42 = 90,653/x
3. Step 3: Cross multiply
   161,309x = 222,606.42 × 90,653
4. Step 4: Simplify right side
   161,309x = 20,179,939,792.26
5. Step 5: Solve for x
   x = 20,179,939,792.26/161,309
6. Step 6: Final answer
   x = 125,101.14