Finding the Fourth Proportional to 42,834.72, 64,244.34 and 11,662.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,834.72 : 64,244.34 = 11,662.68 : x
2. Step 2: Convert to fraction form
   42,834.72/64,244.34 = 11,662.68/x
3. Step 3: Cross multiply
   42,834.72x = 64,244.34 × 11,662.68
4. Step 4: Simplify right side
   42,834.72x = 749,261,179.23
5. Step 5: Solve for x
   x = 749,261,179.23/42,834.72
6. Step 6: Final answer
   x = 17,491.91