Finding the Fourth Proportional to 149,978.67, 206,976.09 and 82,000.17

Step by Step Solution

1. Step 1: Write the proportion equation
   149,978.67 : 206,976.09 = 82,000.17 : x
2. Step 2: Convert to fraction form
   149,978.67/206,976.09 = 82,000.17/x
3. Step 3: Cross multiply
   149,978.67x = 206,976.09 × 82,000.17
4. Step 4: Simplify right side
   149,978.67x = 16,972,074,565.94
5. Step 5: Solve for x
   x = 16,972,074,565.94/149,978.67
6. Step 6: Final answer
   x = 113,163.26