Finding the Fourth Proportional to 113,399.05, 169,979.91 and 42,293.10

Step by Step Solution

1. Step 1: Write the proportion equation
   113,399.05 : 169,979.91 = 42,293.10 : x
2. Step 2: Convert to fraction form
   113,399.05/169,979.91 = 42,293.10/x
3. Step 3: Cross multiply
   113,399.05x = 169,979.91 × 42,293.10
4. Step 4: Simplify right side
   113,399.05x = 7,188,977,331.62
5. Step 5: Solve for x
   x = 7,188,977,331.62/113,399.05
6. Step 6: Final answer
   x = 63,395.39