Finding the Fourth Proportional to 40,356, 60,621.57 and 34,128.51

Step by Step Solution

1. Step 1: Write the proportion equation
   40,356 : 60,621.57 = 34,128.51 : x
2. Step 2: Convert to fraction form
   40,356/60,621.57 = 34,128.51/x
3. Step 3: Cross multiply
   40,356x = 60,621.57 × 34,128.51
4. Step 4: Simplify right side
   40,356x = 2,068,923,857.96
5. Step 5: Solve for x
   x = 2,068,923,857.96/40,356
6. Step 6: Final answer
   x = 51,266.82