Finding the Fourth Proportional to 42,817.54, 64,182.17 and 17,872.11

Step by Step Solution

1. Step 1: Write the proportion equation
   42,817.54 : 64,182.17 = 17,872.11 : x
2. Step 2: Convert to fraction form
   42,817.54/64,182.17 = 17,872.11/x
3. Step 3: Cross multiply
   42,817.54x = 64,182.17 × 17,872.11
4. Step 4: Simplify right side
   42,817.54x = 1,147,070,392.01
5. Step 5: Solve for x
   x = 1,147,070,392.01/42,817.54
6. Step 6: Final answer
   x = 26,789.73