Finding the Fourth Proportional to 115,419.40, 159,287.52 and 67,699.06

Step by Step Solution

1. Step 1: Write the proportion equation
   115,419.40 : 159,287.52 = 67,699.06 : x
2. Step 2: Convert to fraction form
   115,419.40/159,287.52 = 67,699.06/x
3. Step 3: Cross multiply
   115,419.40x = 159,287.52 × 67,699.06
4. Step 4: Simplify right side
   115,419.40x = 10,783,615,373.73
5. Step 5: Solve for x
   x = 10,783,615,373.73/115,419.40
6. Step 6: Final answer
   x = 93,429.83