Finding the Fourth Proportional to 143,023.58, 197,290.50 and 89,215.16

Step by Step Solution

1. Step 1: Write the proportion equation
   143,023.58 : 197,290.50 = 89,215.16 : x
2. Step 2: Convert to fraction form
   143,023.58/197,290.50 = 89,215.16/x
3. Step 3: Cross multiply
   143,023.58x = 197,290.50 × 89,215.16
4. Step 4: Simplify right side
   143,023.58x = 17,601,303,523.98
5. Step 5: Solve for x
   x = 17,601,303,523.98/143,023.58
6. Step 6: Final answer
   x = 123,065.75