Finding the Fourth Proportional to 143,608.24, 198,050.36 and 89,898.15

Step by Step Solution

1. Step 1: Write the proportion equation
   143,608.24 : 198,050.36 = 89,898.15 : x
2. Step 2: Convert to fraction form
   143,608.24/198,050.36 = 89,898.15/x
3. Step 3: Cross multiply
   143,608.24x = 198,050.36 × 89,898.15
4. Step 4: Simplify right side
   143,608.24x = 17,804,360,521.34
5. Step 5: Solve for x
   x = 17,804,360,521.34/143,608.24
6. Step 6: Final answer
   x = 123,978.69