Finding the Fourth Proportional to 42,782.72, 64,169.17 and 11,195.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,782.72 : 64,169.17 = 11,195.83 : x
2. Step 2: Convert to fraction form
   42,782.72/64,169.17 = 11,195.83/x
3. Step 3: Cross multiply
   42,782.72x = 64,169.17 × 11,195.83
4. Step 4: Simplify right side
   42,782.72x = 718,427,118.56
5. Step 5: Solve for x
   x = 718,427,118.56/42,782.72
6. Step 6: Final answer
   x = 16,792.46