Finding the Fourth Proportional to 161,699.42, 242,101.29 and 82,643.42

Step by Step Solution

1. Step 1: Write the proportion equation
   161,699.42 : 242,101.29 = 82,643.42 : x
2. Step 2: Convert to fraction form
   161,699.42/242,101.29 = 82,643.42/x
3. Step 3: Cross multiply
   161,699.42x = 242,101.29 × 82,643.42
4. Step 4: Simplify right side
   161,699.42x = 20,008,078,592.01
5. Step 5: Solve for x
   x = 20,008,078,592.01/161,699.42
6. Step 6: Final answer
   x = 123,736.24