Finding the Fourth Proportional to 40,738.72, 55,896.68 and 40,039.84

Step by Step Solution

1. Step 1: Write the proportion equation
   40,738.72 : 55,896.68 = 40,039.84 : x
2. Step 2: Convert to fraction form
   40,738.72/55,896.68 = 40,039.84/x
3. Step 3: Cross multiply
   40,738.72x = 55,896.68 × 40,039.84
4. Step 4: Simplify right side
   40,738.72x = 2,238,094,123.73
5. Step 5: Solve for x
   x = 2,238,094,123.73/40,738.72
6. Step 6: Final answer
   x = 54,937.76