Finding the Fourth Proportional to 42,727.28, 64,113.93 and 17,784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,727.28 : 64,113.93 = 17,784.56 : x
2. Step 2: Convert to fraction form
   42,727.28/64,113.93 = 17,784.56/x
3. Step 3: Cross multiply
   42,727.28x = 64,113.93 × 17,784.56
4. Step 4: Simplify right side
   42,727.28x = 1,140,238,034.92
5. Step 5: Solve for x
   x = 1,140,238,034.92/42,727.28
6. Step 6: Final answer
   x = 26,686.42