Finding the Fourth Proportional to 143,288.01, 197,687.04 and 85,945.89

Step by Step Solution

1. Step 1: Write the proportion equation
   143,288.01 : 197,687.04 = 85,945.89 : x
2. Step 2: Convert to fraction form
   143,288.01/197,687.04 = 85,945.89/x
3. Step 3: Cross multiply
   143,288.01x = 197,687.04 × 85,945.89
4. Step 4: Simplify right side
   143,288.01x = 16,990,388,594.27
5. Step 5: Solve for x
   x = 16,990,388,594.27/143,288.01
6. Step 6: Final answer
   x = 118,575.09