Finding the Fourth Proportional to 131,404.37, 197,103.78 and 42,657.75

Step by Step Solution

1. Step 1: Write the proportion equation
   131,404.37 : 197,103.78 = 42,657.75 : x
2. Step 2: Convert to fraction form
   131,404.37/197,103.78 = 42,657.75/x
3. Step 3: Cross multiply
   131,404.37x = 197,103.78 × 42,657.75
4. Step 4: Simplify right side
   131,404.37x = 8,408,003,771.30
5. Step 5: Solve for x
   x = 8,408,003,771.30/131,404.37
6. Step 6: Final answer
   x = 63,985.72