Finding the Fourth Proportional to 142,937.46, 197,189 and 89,235.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,937.46 : 197,189 = 89,235.72 : x
2. Step 2: Convert to fraction form
   142,937.46/197,189 = 89,235.72/x
3. Step 3: Cross multiply
   142,937.46x = 197,189 × 89,235.72
4. Step 4: Simplify right side
   142,937.46x = 17,596,302,391.08
5. Step 5: Solve for x
   x = 17,596,302,391.08/142,937.46
6. Step 6: Final answer
   x = 123,104.90