Finding the Fourth Proportional to 154,920.86, 213,795.03 and 86,942.00

Step by Step Solution

1. Step 1: Write the proportion equation
   154,920.86 : 213,795.03 = 86,942.00 : x
2. Step 2: Convert to fraction form
   154,920.86/213,795.03 = 86,942.00/x
3. Step 3: Cross multiply
   154,920.86x = 213,795.03 × 86,942.00
4. Step 4: Simplify right side
   154,920.86x = 18,587,766,429.28
5. Step 5: Solve for x
   x = 18,587,766,429.28/154,920.86
6. Step 6: Final answer
   x = 119,982.34