Finding the Fourth Proportional to 105,462.05, 145,535.69 and 57,714.44

Step by Step Solution

1. Step 1: Write the proportion equation
   105,462.05 : 145,535.69 = 57,714.44 : x
2. Step 2: Convert to fraction form
   105,462.05/145,535.69 = 57,714.44/x
3. Step 3: Cross multiply
   105,462.05x = 145,535.69 × 57,714.44
4. Step 4: Simplify right side
   105,462.05x = 8,399,510,559.79
5. Step 5: Solve for x
   x = 8,399,510,559.79/105,462.05
6. Step 6: Final answer
   x = 79,644.86