Finding the Fourth Proportional to 154,892.54, 213,738.59 and 86,900.33

Step by Step Solution

1. Step 1: Write the proportion equation
   154,892.54 : 213,738.59 = 86,900.33 : x
2. Step 2: Convert to fraction form
   154,892.54/213,738.59 = 86,900.33/x
3. Step 3: Cross multiply
   154,892.54x = 213,738.59 × 86,900.33
4. Step 4: Simplify right side
   154,892.54x = 18,573,952,501.54
5. Step 5: Solve for x
   x = 18,573,952,501.54/154,892.54
6. Step 6: Final answer
   x = 119,915.09