Finding the Fourth Proportional to 142,953.50, 197,146.68 and 89,243.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,953.50 : 197,146.68 = 89,243.48 : x
2. Step 2: Convert to fraction form
   142,953.50/197,146.68 = 89,243.48/x
3. Step 3: Cross multiply
   142,953.50x = 197,146.68 × 89,243.48
4. Step 4: Simplify right side
   142,953.50x = 17,594,055,793.65
5. Step 5: Solve for x
   x = 17,594,055,793.65/142,953.50
6. Step 6: Final answer
   x = 123,075.38