Finding the Fourth Proportional to 42,687.79, 64,050.14 and 16,386.41

Step by Step Solution

1. Step 1: Write the proportion equation
   42,687.79 : 64,050.14 = 16,386.41 : x
2. Step 2: Convert to fraction form
   42,687.79/64,050.14 = 16,386.41/x
3. Step 3: Cross multiply
   42,687.79x = 64,050.14 × 16,386.41
4. Step 4: Simplify right side
   42,687.79x = 1,049,552,055.69
5. Step 5: Solve for x
   x = 1,049,552,055.69/42,687.79
6. Step 6: Final answer
   x = 24,586.71