Finding the Fourth Proportional to 154,222.58, 231,333.86 and 86,759.10

Step by Step Solution

1. Step 1: Write the proportion equation
   154,222.58 : 231,333.86 = 86,759.10 : x
2. Step 2: Convert to fraction form
   154,222.58/231,333.86 = 86,759.10/x
3. Step 3: Cross multiply
   154,222.58x = 231,333.86 × 86,759.10
4. Step 4: Simplify right side
   154,222.58x = 20,070,317,710.02
5. Step 5: Solve for x
   x = 20,070,317,710.02/154,222.58
6. Step 6: Final answer
   x = 130,138.64