Finding the Fourth Proportional to 42,882.89, 64,330.55 and 13,303.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,882.89 : 64,330.55 = 13,303.10 : x
2. Step 2: Convert to fraction form
   42,882.89/64,330.55 = 13,303.10/x
3. Step 3: Cross multiply
   42,882.89x = 64,330.55 × 13,303.10
4. Step 4: Simplify right side
   42,882.89x = 855,795,351.54
5. Step 5: Solve for x
   x = 855,795,351.54/42,882.89
6. Step 6: Final answer
   x = 19,956.57