Finding the Fourth Proportional to 42,773.76, 64,171.58 and 17,805.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,773.76 : 64,171.58 = 17,805.51 : x
2. Step 2: Convert to fraction form
   42,773.76/64,171.58 = 17,805.51/x
3. Step 3: Cross multiply
   42,773.76x = 64,171.58 × 17,805.51
4. Step 4: Simplify right side
   42,773.76x = 1,142,607,620.38
5. Step 5: Solve for x
   x = 1,142,607,620.38/42,773.76
6. Step 6: Final answer
   x = 26,712.82