Finding the Fourth Proportional to 42,997.76, 64,504.20 and 19,626.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,997.76 : 64,504.20 = 19,626.56 : x
2. Step 2: Convert to fraction form
   42,997.76/64,504.20 = 19,626.56/x
3. Step 3: Cross multiply
   42,997.76x = 64,504.20 × 19,626.56
4. Step 4: Simplify right side
   42,997.76x = 1,265,995,551.55
5. Step 5: Solve for x
   x = 1,265,995,551.55/42,997.76
6. Step 6: Final answer
   x = 29,443.29