Finding the Fourth Proportional to 42,818.04, 64,182.92 and 17,872.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,818.04 : 64,182.92 = 17,872.61 : x
2. Step 2: Convert to fraction form
   42,818.04/64,182.92 = 17,872.61/x
3. Step 3: Cross multiply
   42,818.04x = 64,182.92 × 17,872.61
4. Step 4: Simplify right side
   42,818.04x = 1,147,115,887.54
5. Step 5: Solve for x
   x = 1,147,115,887.54/42,818.04
6. Step 6: Final answer
   x = 26,790.48