Finding the Fourth Proportional to 42,929.76, 64,391.52 and 11,762.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,929.76 : 64,391.52 = 11,762.56 : x
2. Step 2: Convert to fraction form
   42,929.76/64,391.52 = 11,762.56/x
3. Step 3: Cross multiply
   42,929.76x = 64,391.52 × 11,762.56
4. Step 4: Simplify right side
   42,929.76x = 757,409,117.49
5. Step 5: Solve for x
   x = 757,409,117.49/42,929.76
6. Step 6: Final answer
   x = 17,642.99