Finding the Fourth Proportional to 42,773.67, 64,171.44 and 17,805.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,773.67 : 64,171.44 = 17,805.42 : x
2. Step 2: Convert to fraction form
   42,773.67/64,171.44 = 17,805.42/x
3. Step 3: Cross multiply
   42,773.67x = 64,171.44 × 17,805.42
4. Step 4: Simplify right side
   42,773.67x = 1,142,599,441.20
5. Step 5: Solve for x
   x = 1,142,599,441.20/42,773.67
6. Step 6: Final answer
   x = 26,712.68