Finding the Fourth Proportional to 113,395.05, 169,973.91 and 42,289.10

Step by Step Solution

1. Step 1: Write the proportion equation
   113,395.05 : 169,973.91 = 42,289.10 : x
2. Step 2: Convert to fraction form
   113,395.05/169,973.91 = 42,289.10/x
3. Step 3: Cross multiply
   113,395.05x = 169,973.91 × 42,289.10
4. Step 4: Simplify right side
   113,395.05x = 7,188,042,827.51
5. Step 5: Solve for x
   x = 7,188,042,827.51/113,395.05
6. Step 6: Final answer
   x = 63,389.39