Finding the Fourth Proportional to 142,603, 196,843.98 and 82,987

Step by Step Solution

1. Step 1: Write the proportion equation
   142,603 : 196,843.98 = 82,987 : x
2. Step 2: Convert to fraction form
   142,603/196,843.98 = 82,987/x
3. Step 3: Cross multiply
   142,603x = 196,843.98 × 82,987
4. Step 4: Simplify right side
   142,603x = 16,335,491,368.26
5. Step 5: Solve for x
   x = 16,335,491,368.26/142,603
6. Step 6: Final answer
   x = 114,552.23