Finding the Fourth Proportional to 131,407.72, 197,093.05 and 42,662.30

Step by Step Solution

1. Step 1: Write the proportion equation
   131,407.72 : 197,093.05 = 42,662.30 : x
2. Step 2: Convert to fraction form
   131,407.72/197,093.05 = 42,662.30/x
3. Step 3: Cross multiply
   131,407.72x = 197,093.05 × 42,662.30
4. Step 4: Simplify right side
   131,407.72x = 8,408,441,734.89
5. Step 5: Solve for x
   x = 8,408,441,734.89/131,407.72
6. Step 6: Final answer
   x = 63,987.43