Finding the Fourth Proportional to 115,475.40, 159,356.16 and 67,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,475.40 : 159,356.16 = 67,086.72 : x
2. Step 2: Convert to fraction form
   115,475.40/159,356.16 = 67,086.72/x
3. Step 3: Cross multiply
   115,475.40x = 159,356.16 × 67,086.72
4. Step 4: Simplify right side
   115,475.40x = 10,690,682,086.20
5. Step 5: Solve for x
   x = 10,690,682,086.20/115,475.40
6. Step 6: Final answer
   x = 92,579.74