Finding the Fourth Proportional to 142,363.62, 196,456.32 and 85,012.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,363.62 : 196,456.32 = 85,012.58 : x
2. Step 2: Convert to fraction form
   142,363.62/196,456.32 = 85,012.58/x
3. Step 3: Cross multiply
   142,363.62x = 196,456.32 × 85,012.58
4. Step 4: Simplify right side
   142,363.62x = 16,701,258,620.51
5. Step 5: Solve for x
   x = 16,701,258,620.51/142,363.62
6. Step 6: Final answer
   x = 117,314.09