Finding the Fourth Proportional to 149,556, 206,401.86 and 82,488

Step by Step Solution

1. Step 1: Write the proportion equation
   149,556 : 206,401.86 = 82,488 : x
2. Step 2: Convert to fraction form
   149,556/206,401.86 = 82,488/x
3. Step 3: Cross multiply
   149,556x = 206,401.86 × 82,488
4. Step 4: Simplify right side
   149,556x = 17,025,676,627.68
5. Step 5: Solve for x
   x = 17,025,676,627.68/149,556
6. Step 6: Final answer
   x = 113,841.48