Finding the Fourth Proportional to 113,436.66, 156,609.98 and 100,825.37

Step by Step Solution

1. Step 1: Write the proportion equation
   113,436.66 : 156,609.98 = 100,825.37 : x
2. Step 2: Convert to fraction form
   113,436.66/156,609.98 = 100,825.37/x
3. Step 3: Cross multiply
   113,436.66x = 156,609.98 × 100,825.37
4. Step 4: Simplify right side
   113,436.66x = 15,790,258,648.21
5. Step 5: Solve for x
   x = 15,790,258,648.21/113,436.66
6. Step 6: Final answer
   x = 139,198.90