Finding the Fourth Proportional to 142,570.83, 196,734.41 and 85,198.76

Step by Step Solution

1. Step 1: Write the proportion equation
   142,570.83 : 196,734.41 = 85,198.76 : x
2. Step 2: Convert to fraction form
   142,570.83/196,734.41 = 85,198.76/x
3. Step 3: Cross multiply
   142,570.83x = 196,734.41 × 85,198.76
4. Step 4: Simplify right side
   142,570.83x = 16,761,527,781.33
5. Step 5: Solve for x
   x = 16,761,527,781.33/142,570.83
6. Step 6: Final answer
   x = 117,566.32