Finding the Fourth Proportional to 142,516.26, 196,788.69 and 91,554.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,516.26 : 196,788.69 = 91,554.30 : x
2. Step 2: Convert to fraction form
   142,516.26/196,788.69 = 91,554.30/x
3. Step 3: Cross multiply
   142,516.26x = 196,788.69 × 91,554.30
4. Step 4: Simplify right side
   142,516.26x = 18,016,850,760.87
5. Step 5: Solve for x
   x = 18,016,850,760.87/142,516.26
6. Step 6: Final answer
   x = 126,419.62