Finding the Fourth Proportional to 161,300.50, 222,594.69 and 90,644.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,300.50 : 222,594.69 = 90,644.50 : x
2. Step 2: Convert to fraction form
   161,300.50/222,594.69 = 90,644.50/x
3. Step 3: Cross multiply
   161,300.50x = 222,594.69 × 90,644.50
4. Step 4: Simplify right side
   161,300.50x = 20,176,984,377.71
5. Step 5: Solve for x
   x = 20,176,984,377.71/161,300.50
6. Step 6: Final answer
   x = 125,089.41