Finding the Fourth Proportional to 42,866.40, 64,309.73 and 17,892.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,866.40 : 64,309.73 = 17,892.57 : x
2. Step 2: Convert to fraction form
   42,866.40/64,309.73 = 17,892.57/x
3. Step 3: Cross multiply
   42,866.40x = 64,309.73 × 17,892.57
4. Step 4: Simplify right side
   42,866.40x = 1,150,666,256.24
5. Step 5: Solve for x
   x = 1,150,666,256.24/42,866.40
6. Step 6: Final answer
   x = 26,843.08