Finding the Fourth Proportional to 42,780.74, 64,180.17 and 16,126.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,780.74 : 64,180.17 = 16,126.16 : x
2. Step 2: Convert to fraction form
   42,780.74/64,180.17 = 16,126.16/x
3. Step 3: Cross multiply
   42,780.74x = 64,180.17 × 16,126.16
4. Step 4: Simplify right side
   42,780.74x = 1,034,979,369.35
5. Step 5: Solve for x
   x = 1,034,979,369.35/42,780.74
6. Step 6: Final answer
   x = 24,192.65