Finding the Fourth Proportional to 72,857.45, 109,257.37 and 35,406.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,857.45 : 109,257.37 = 35,406.43 : x
2. Step 2: Convert to fraction form
   72,857.45/109,257.37 = 35,406.43/x
3. Step 3: Cross multiply
   72,857.45x = 109,257.37 × 35,406.43
4. Step 4: Simplify right side
   72,857.45x = 3,868,413,422.89
5. Step 5: Solve for x
   x = 3,868,413,422.89/72,857.45
6. Step 6: Final answer
   x = 53,095.65