Finding the Fourth Proportional to 42,863.36, 64,305.23 and 17,889.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,863.36 : 64,305.23 = 17,889.53 : x
2. Step 2: Convert to fraction form
   42,863.36/64,305.23 = 17,889.53/x
3. Step 3: Cross multiply
   42,863.36x = 64,305.23 × 17,889.53
4. Step 4: Simplify right side
   42,863.36x = 1,150,389,930.27
5. Step 5: Solve for x
   x = 1,150,389,930.27/42,863.36
6. Step 6: Final answer
   x = 26,838.54