Finding the Fourth Proportional to 142,442.73, 196,515.81 and 91,441.89

Step by Step Solution

1. Step 1: Write the proportion equation
   142,442.73 : 196,515.81 = 91,441.89 : x
2. Step 2: Convert to fraction form
   142,442.73/196,515.81 = 91,441.89/x
3. Step 3: Cross multiply
   142,442.73x = 196,515.81 × 91,441.89
4. Step 4: Simplify right side
   142,442.73x = 17,969,777,081.28
5. Step 5: Solve for x
   x = 17,969,777,081.28/142,442.73
6. Step 6: Final answer
   x = 126,154.40