Finding the Fourth Proportional to 84,568.77, 126,696.56 and 42,399.63

Step by Step Solution

1. Step 1: Write the proportion equation
   84,568.77 : 126,696.56 = 42,399.63 : x
2. Step 2: Convert to fraction form
   84,568.77/126,696.56 = 42,399.63/x
3. Step 3: Cross multiply
   84,568.77x = 126,696.56 × 42,399.63
4. Step 4: Simplify right side
   84,568.77x = 5,371,887,054.27
5. Step 5: Solve for x
   x = 5,371,887,054.27/84,568.77
6. Step 6: Final answer
   x = 63,520.93