Finding the Fourth Proportional to 42,796.85, 64,160.49 and 17,855.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,796.85 : 64,160.49 = 17,855.48 : x
2. Step 2: Convert to fraction form
   42,796.85/64,160.49 = 17,855.48/x
3. Step 3: Cross multiply
   42,796.85x = 64,160.49 × 17,855.48
4. Step 4: Simplify right side
   42,796.85x = 1,145,616,506.39
5. Step 5: Solve for x
   x = 1,145,616,506.39/42,796.85
6. Step 6: Final answer
   x = 26,768.71