Finding the Fourth Proportional to 42,671.58, 63,979.98 and 17,728.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,671.58 : 63,979.98 = 17,728.86 : x
2. Step 2: Convert to fraction form
   42,671.58/63,979.98 = 17,728.86/x
3. Step 3: Cross multiply
   42,671.58x = 63,979.98 × 17,728.86
4. Step 4: Simplify right side
   42,671.58x = 1,134,292,108.22
5. Step 5: Solve for x
   x = 1,134,292,108.22/42,671.58
6. Step 6: Final answer
   x = 26,581.91