Finding the Fourth Proportional to 143,611.50, 198,188.43 and 89,879.34

Step by Step Solution

1. Step 1: Write the proportion equation
   143,611.50 : 198,188.43 = 89,879.34 : x
2. Step 2: Convert to fraction form
   143,611.50/198,188.43 = 89,879.34/x
3. Step 3: Cross multiply
   143,611.50x = 198,188.43 × 89,879.34
4. Step 4: Simplify right side
   143,611.50x = 17,813,045,284.04
5. Step 5: Solve for x
   x = 17,813,045,284.04/143,611.50
6. Step 6: Final answer
   x = 124,036.34