Finding the Fourth Proportional to 68,779.62, 103,198.59 and 37,578.42

Step by Step Solution

1. Step 1: Write the proportion equation
   68,779.62 : 103,198.59 = 37,578.42 : x
2. Step 2: Convert to fraction form
   68,779.62/103,198.59 = 37,578.42/x
3. Step 3: Cross multiply
   68,779.62x = 103,198.59 × 37,578.42
4. Step 4: Simplify right side
   68,779.62x = 3,878,039,958.43
5. Step 5: Solve for x
   x = 3,878,039,958.43/68,779.62
6. Step 6: Final answer
   x = 56,383.56