Finding the Fourth Proportional to 42,695.33, 64,044.89 and 13,114.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,695.33 : 64,044.89 = 13,114.40 : x
2. Step 2: Convert to fraction form
   42,695.33/64,044.89 = 13,114.40/x
3. Step 3: Cross multiply
   42,695.33x = 64,044.89 × 13,114.40
4. Step 4: Simplify right side
   42,695.33x = 839,910,239.84
5. Step 5: Solve for x
   x = 839,910,239.84/42,695.33
6. Step 6: Final answer
   x = 19,672.18