Finding the Fourth Proportional to 42,817.20, 64,238.15 and 17,844.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,817.20 : 64,238.15 = 17,844.36 : x
2. Step 2: Convert to fraction form
   42,817.20/64,238.15 = 17,844.36/x
3. Step 3: Cross multiply
   42,817.20x = 64,238.15 × 17,844.36
4. Step 4: Simplify right side
   42,817.20x = 1,146,288,674.33
5. Step 5: Solve for x
   x = 1,146,288,674.33/42,817.20
6. Step 6: Final answer
   x = 26,771.69