Finding the Fourth Proportional to 42,929.42, 64,384.29 and 11,767.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,929.42 : 64,384.29 = 11,767.10 : x
2. Step 2: Convert to fraction form
   42,929.42/64,384.29 = 11,767.10/x
3. Step 3: Cross multiply
   42,929.42x = 64,384.29 × 11,767.10
4. Step 4: Simplify right side
   42,929.42x = 757,616,378.86
5. Step 5: Solve for x
   x = 757,616,378.86/42,929.42
6. Step 6: Final answer
   x = 17,647.95