Finding the Fourth Proportional to 42,993.40, 64,514.70 and 16,694.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,993.40 : 64,514.70 = 16,694.72 : x
2. Step 2: Convert to fraction form
   42,993.40/64,514.70 = 16,694.72/x
3. Step 3: Cross multiply
   42,993.40x = 64,514.70 × 16,694.72
4. Step 4: Simplify right side
   42,993.40x = 1,077,055,013.67
5. Step 5: Solve for x
   x = 1,077,055,013.67/42,993.40
6. Step 6: Final answer
   x = 25,051.64