Finding the Fourth Proportional to 143,016.99, 197,372.88 and 82,590.18

Step by Step Solution

1. Step 1: Write the proportion equation
   143,016.99 : 197,372.88 = 82,590.18 : x
2. Step 2: Convert to fraction form
   143,016.99/197,372.88 = 82,590.18/x
3. Step 3: Cross multiply
   143,016.99x = 197,372.88 × 82,590.18
4. Step 4: Simplify right side
   143,016.99x = 16,301,061,686.32
5. Step 5: Solve for x
   x = 16,301,061,686.32/143,016.99
6. Step 6: Final answer
   x = 113,979.90