Finding the Fourth Proportional to 42,695.54, 64,045.16 and 13,114.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,695.54 : 64,045.16 = 13,114.54 : x
2. Step 2: Convert to fraction form
   42,695.54/64,045.16 = 13,114.54/x
3. Step 3: Cross multiply
   42,695.54x = 64,045.16 × 13,114.54
4. Step 4: Simplify right side
   42,695.54x = 839,922,812.63
5. Step 5: Solve for x
   x = 839,922,812.63/42,695.54
6. Step 6: Final answer
   x = 19,672.38