Finding the Fourth Proportional to 142,950.75, 197,142.89 and 89,240.73

Step by Step Solution

1. Step 1: Write the proportion equation
   142,950.75 : 197,142.89 = 89,240.73 : x
2. Step 2: Convert to fraction form
   142,950.75/197,142.89 = 89,240.73/x
3. Step 3: Cross multiply
   142,950.75x = 197,142.89 × 89,240.73
4. Step 4: Simplify right side
   142,950.75x = 17,593,174,971.71
5. Step 5: Solve for x
   x = 17,593,174,971.71/142,950.75
6. Step 6: Final answer
   x = 123,071.58