Finding the Fourth Proportional to 143,090.05, 197,424.26 and 89,429.58

Step by Step Solution

1. Step 1: Write the proportion equation
   143,090.05 : 197,424.26 = 89,429.58 : x
2. Step 2: Convert to fraction form
   143,090.05/197,424.26 = 89,429.58/x
3. Step 3: Cross multiply
   143,090.05x = 197,424.26 × 89,429.58
4. Step 4: Simplify right side
   143,090.05x = 17,655,568,653.61
5. Step 5: Solve for x
   x = 17,655,568,653.61/143,090.05
6. Step 6: Final answer
   x = 123,387.82