Finding the Fourth Proportional to 142,760.13, 197,007.15 and 89,041.33

Step by Step Solution

1. Step 1: Write the proportion equation
   142,760.13 : 197,007.15 = 89,041.33 : x
2. Step 2: Convert to fraction form
   142,760.13/197,007.15 = 89,041.33/x
3. Step 3: Cross multiply
   142,760.13x = 197,007.15 × 89,041.33
4. Step 4: Simplify right side
   142,760.13x = 17,541,778,655.51
5. Step 5: Solve for x
   x = 17,541,778,655.51/142,760.13
6. Step 6: Final answer
   x = 122,875.89