Finding the Fourth Proportional to 142,952.50, 197,145.30 and 89,242.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,952.50 : 197,145.30 = 89,242.48 : x
2. Step 2: Convert to fraction form
   142,952.50/197,145.30 = 89,242.48/x
3. Step 3: Cross multiply
   142,952.50x = 197,145.30 × 89,242.48
4. Step 4: Simplify right side
   142,952.50x = 17,593,735,492.34
5. Step 5: Solve for x
   x = 17,593,735,492.34/142,952.50
6. Step 6: Final answer
   x = 123,074.00