Finding the Fourth Proportional to 143,019.58, 197,284.99 and 89,211.15

Step by Step Solution

1. Step 1: Write the proportion equation
   143,019.58 : 197,284.99 = 89,211.15 : x
2. Step 2: Convert to fraction form
   143,019.58/197,284.99 = 89,211.15/x
3. Step 3: Cross multiply
   143,019.58x = 197,284.99 × 89,211.15
4. Step 4: Simplify right side
   143,019.58x = 17,600,020,835.64
5. Step 5: Solve for x
   x = 17,600,020,835.64/143,019.58
6. Step 6: Final answer
   x = 123,060.22