Finding the Fourth Proportional to 115,458.71, 159,443.06 and 109,168.70

Step by Step Solution

1. Step 1: Write the proportion equation
   115,458.71 : 159,443.06 = 109,168.70 : x
2. Step 2: Convert to fraction form
   115,458.71/159,443.06 = 109,168.70/x
3. Step 3: Cross multiply
   115,458.71x = 159,443.06 × 109,168.70
4. Step 4: Simplify right side
   115,458.71x = 17,406,191,584.22
5. Step 5: Solve for x
   x = 17,406,191,584.22/115,458.71
6. Step 6: Final answer
   x = 150,756.85