Finding the Fourth Proportional to 123,359.18, 185,112.57 and 113,320.85

Step by Step Solution

1. Step 1: Write the proportion equation
   123,359.18 : 185,112.57 = 113,320.85 : x
2. Step 2: Convert to fraction form
   123,359.18/185,112.57 = 113,320.85/x
3. Step 3: Cross multiply
   123,359.18x = 185,112.57 × 113,320.85
4. Step 4: Simplify right side
   123,359.18x = 20,977,113,277.47
5. Step 5: Solve for x
   x = 20,977,113,277.47/123,359.18
6. Step 6: Final answer
   x = 170,049.07