Finding the Fourth Proportional to 113,626.21, 157,087.61 and 85,282.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113,626.21 : 157,087.61 = 85,282.69 : x
2. Step 2: Convert to fraction form
   113,626.21/157,087.61 = 85,282.69/x
3. Step 3: Cross multiply
   113,626.21x = 157,087.61 × 85,282.69
4. Step 4: Simplify right side
   113,626.21x = 13,396,853,946.47
5. Step 5: Solve for x
   x = 13,396,853,946.47/113,626.21
6. Step 6: Final answer
   x = 117,902.85