Finding the Fourth Proportional to 123,980.87, 185,901.31 and 113,401.26

Step by Step Solution

1. Step 1: Write the proportion equation
   123,980.87 : 185,901.31 = 113,401.26 : x
2. Step 2: Convert to fraction form
   123,980.87/185,901.31 = 113,401.26/x
3. Step 3: Cross multiply
   123,980.87x = 185,901.31 × 113,401.26
4. Step 4: Simplify right side
   123,980.87x = 21,081,442,222.64
5. Step 5: Solve for x
   x = 21,081,442,222.64/123,980.87
6. Step 6: Final answer
   x = 170,037.86