Finding the Fourth Proportional to 161,507.11, 222,877.59 and 89,887.12

Step by Step Solution

1. Step 1: Write the proportion equation
   161,507.11 : 222,877.59 = 89,887.12 : x
2. Step 2: Convert to fraction form
   161,507.11/222,877.59 = 89,887.12/x
3. Step 3: Cross multiply
   161,507.11x = 222,877.59 × 89,887.12
4. Step 4: Simplify right side
   161,507.11x = 20,033,824,677.64
5. Step 5: Solve for x
   x = 20,033,824,677.64/161,507.11
6. Step 6: Final answer
   x = 124,042.99