Finding the Fourth Proportional to 142,606.50, 196,930.32 and 91,707.62

Step by Step Solution

1. Step 1: Write the proportion equation
   142,606.50 : 196,930.32 = 91,707.62 : x
2. Step 2: Convert to fraction form
   142,606.50/196,930.32 = 91,707.62/x
3. Step 3: Cross multiply
   142,606.50x = 196,930.32 × 91,707.62
4. Step 4: Simplify right side
   142,606.50x = 18,060,010,953.04
5. Step 5: Solve for x
   x = 18,060,010,953.04/142,606.50
6. Step 6: Final answer
   x = 126,642.27