Finding the Fourth Proportional to 142,570.33, 196,733.72 and 85,198.26

Step by Step Solution

1. Step 1: Write the proportion equation
   142,570.33 : 196,733.72 = 85,198.26 : x
2. Step 2: Convert to fraction form
   142,570.33/196,733.72 = 85,198.26/x
3. Step 3: Cross multiply
   142,570.33x = 196,733.72 × 85,198.26
4. Step 4: Simplify right side
   142,570.33x = 16,761,370,627.33
5. Step 5: Solve for x
   x = 16,761,370,627.33/142,570.33
6. Step 6: Final answer
   x = 117,565.63