Finding the Fourth Proportional to 161,531.49, 222,913.46 and 89,909.98

Step by Step Solution

1. Step 1: Write the proportion equation
   161,531.49 : 222,913.46 = 89,909.98 : x
2. Step 2: Convert to fraction form
   161,531.49/222,913.46 = 89,909.98/x
3. Step 3: Cross multiply
   161,531.49x = 222,913.46 × 89,909.98
4. Step 4: Simplify right side
   161,531.49x = 20,042,144,397.82
5. Step 5: Solve for x
   x = 20,042,144,397.82/161,531.49
6. Step 6: Final answer
   x = 124,075.77