Finding the Fourth Proportional to 85,101.72, 117,422.56 and 49,289.59

Step by Step Solution

1. Step 1: Write the proportion equation
   85,101.72 : 117,422.56 = 49,289.59 : x
2. Step 2: Convert to fraction form
   85,101.72/117,422.56 = 49,289.59/x
3. Step 3: Cross multiply
   85,101.72x = 117,422.56 × 49,289.59
4. Step 4: Simplify right side
   85,101.72x = 5,787,709,839.15
5. Step 5: Solve for x
   x = 5,787,709,839.15/85,101.72
6. Step 6: Final answer
   x = 68,009.32