Finding the Fourth Proportional to 113,196.91, 169,515.10 and 83,139.87

Step by Step Solution

1. Step 1: Write the proportion equation
   113,196.91 : 169,515.10 = 83,139.87 : x
2. Step 2: Convert to fraction form
   113,196.91/169,515.10 = 83,139.87/x
3. Step 3: Cross multiply
   113,196.91x = 169,515.10 × 83,139.87
4. Step 4: Simplify right side
   113,196.91x = 14,093,463,161.10
5. Step 5: Solve for x
   x = 14,093,463,161.10/113,196.91
6. Step 6: Final answer
   x = 124,503.96