Finding the Fourth Proportional to 81,717.69, 122,465.81 and 42,302.48

Step by Step Solution

1. Step 1: Write the proportion equation
   81,717.69 : 122,465.81 = 42,302.48 : x
2. Step 2: Convert to fraction form
   81,717.69/122,465.81 = 42,302.48/x
3. Step 3: Cross multiply
   81,717.69x = 122,465.81 × 42,302.48
4. Step 4: Simplify right side
   81,717.69x = 5,180,606,654.37
5. Step 5: Solve for x
   x = 5,180,606,654.37/81,717.69
6. Step 6: Final answer
   x = 63,396.39