Finding the Fourth Proportional to 142,749.30, 196,904.93 and 91,828.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,749.30 : 196,904.93 = 91,828.42 : x
2. Step 2: Convert to fraction form
   142,749.30/196,904.93 = 91,828.42/x
3. Step 3: Cross multiply
   142,749.30x = 196,904.93 × 91,828.42
4. Step 4: Simplify right side
   142,749.30x = 18,081,467,660.71
5. Step 5: Solve for x
   x = 18,081,467,660.71/142,749.30
6. Step 6: Final answer
   x = 126,665.89