Finding the Fourth Proportional to 43,064.06, 64,596.18 and 13,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   43,064.06 : 64,596.18 = 13,078.56 : x
2. Step 2: Convert to fraction form
   43,064.06/64,596.18 = 13,078.56/x
3. Step 3: Cross multiply
   43,064.06x = 64,596.18 × 13,078.56
4. Step 4: Simplify right side
   43,064.06x = 844,825,307.18
5. Step 5: Solve for x
   x = 844,825,307.18/43,064.06
6. Step 6: Final answer
   x = 19,617.88