Finding the Fourth Proportional to 75,429.70, 113,142.78 and 37,979.72

Step by Step Solution

1. Step 1: Write the proportion equation
   75,429.70 : 113,142.78 = 37,979.72 : x
2. Step 2: Convert to fraction form
   75,429.70/113,142.78 = 37,979.72/x
3. Step 3: Cross multiply
   75,429.70x = 113,142.78 × 37,979.72
4. Step 4: Simplify right side
   75,429.70x = 4,297,131,104.42
5. Step 5: Solve for x
   x = 4,297,131,104.42/75,429.70
6. Step 6: Final answer
   x = 56,968.69