Finding the Fourth Proportional to 142,086.49, 196,150.31 and 88,388.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,086.49 : 196,150.31 = 88,388.96 : x
2. Step 2: Convert to fraction form
   142,086.49/196,150.31 = 88,388.96/x
3. Step 3: Cross multiply
   142,086.49x = 196,150.31 × 88,388.96
4. Step 4: Simplify right side
   142,086.49x = 17,337,520,813.34
5. Step 5: Solve for x
   x = 17,337,520,813.34/142,086.49
6. Step 6: Final answer
   x = 122,020.90