Finding the Fourth Proportional to 143,069.12, 197,444.82 and 82,642.30

Step by Step Solution

1. Step 1: Write the proportion equation
   143,069.12 : 197,444.82 = 82,642.30 : x
2. Step 2: Convert to fraction form
   143,069.12/197,444.82 = 82,642.30/x
3. Step 3: Cross multiply
   143,069.12x = 197,444.82 × 82,642.30
4. Step 4: Simplify right side
   143,069.12x = 16,317,294,047.89
5. Step 5: Solve for x
   x = 16,317,294,047.89/143,069.12
6. Step 6: Final answer
   x = 114,051.82