Finding the Fourth Proportional to 143,092.05, 197,427.02 and 89,431.58

Step by Step Solution

1. Step 1: Write the proportion equation
   143,092.05 : 197,427.02 = 89,431.58 : x
2. Step 2: Convert to fraction form
   143,092.05/197,427.02 = 89,431.58/x
3. Step 3: Cross multiply
   143,092.05x = 197,427.02 × 89,431.58
4. Step 4: Simplify right side
   143,092.05x = 17,656,210,333.29
5. Step 5: Solve for x
   x = 17,656,210,333.29/143,092.05
6. Step 6: Final answer
   x = 123,390.58