Finding the Fourth Proportional to 154,851.89, 213,697.71 and 86,883.57

Step by Step Solution

1. Step 1: Write the proportion equation
   154,851.89 : 213,697.71 = 86,883.57 : x
2. Step 2: Convert to fraction form
   154,851.89/213,697.71 = 86,883.57/x
3. Step 3: Cross multiply
   154,851.89x = 213,697.71 × 86,883.57
4. Step 4: Simplify right side
   154,851.89x = 18,566,819,945.62
5. Step 5: Solve for x
   x = 18,566,819,945.62/154,851.89
6. Step 6: Final answer
   x = 119,900.51