Finding the Fourth Proportional to 113,559.45, 170,287.27 and 42,429.92

Step by Step Solution

1. Step 1: Write the proportion equation
   113,559.45 : 170,287.27 = 42,429.92 : x
2. Step 2: Convert to fraction form
   113,559.45/170,287.27 = 42,429.92/x
3. Step 3: Cross multiply
   113,559.45x = 170,287.27 × 42,429.92
4. Step 4: Simplify right side
   113,559.45x = 7,225,274,179.53
5. Step 5: Solve for x
   x = 7,225,274,179.53/113,559.45
6. Step 6: Final answer
   x = 63,625.48