Finding the Fourth Proportional to 42,766.56, 64,159.56 and 19,399.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,766.56 : 64,159.56 = 19,399.68 : x
2. Step 2: Convert to fraction form
   42,766.56/64,159.56 = 19,399.68/x
3. Step 3: Cross multiply
   42,766.56x = 64,159.56 × 19,399.68
4. Step 4: Simplify right side
   42,766.56x = 1,244,674,932.94
5. Step 5: Solve for x
   x = 1,244,674,932.94/42,766.56
6. Step 6: Final answer
   x = 29,103.93