Finding the Fourth Proportional to 154,661.50, 213,429.24 and 91,003.42

Step by Step Solution

1. Step 1: Write the proportion equation
   154,661.50 : 213,429.24 = 91,003.42 : x
2. Step 2: Convert to fraction form
   154,661.50/213,429.24 = 91,003.42/x
3. Step 3: Cross multiply
   154,661.50x = 213,429.24 × 91,003.42
4. Step 4: Simplify right side
   154,661.50x = 19,422,790,768.00
5. Step 5: Solve for x
   x = 19,422,790,768.00/154,661.50
6. Step 6: Final answer
   x = 125,582.58