Finding the Fourth Proportional to 143,009.56, 197,355.52 and 82,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,009.56 : 197,355.52 = 82,585.50 : x
2. Step 2: Convert to fraction form
   143,009.56/197,355.52 = 82,585.50/x
3. Step 3: Cross multiply
   143,009.56x = 197,355.52 × 82,585.50
4. Step 4: Simplify right side
   143,009.56x = 16,298,704,296.96
5. Step 5: Solve for x
   x = 16,298,704,296.96/143,009.56
6. Step 6: Final answer
   x = 113,969.33