Finding the Fourth Proportional to 131,492.72, 197,103 and 64,843.76

Step by Step Solution

1. Step 1: Write the proportion equation
   131,492.72 : 197,103 = 64,843.76 : x
2. Step 2: Convert to fraction form
   131,492.72/197,103 = 64,843.76/x
3. Step 3: Cross multiply
   131,492.72x = 197,103 × 64,843.76
4. Step 4: Simplify right side
   131,492.72x = 12,780,899,627.28
5. Step 5: Solve for x
   x = 12,780,899,627.28/131,492.72
6. Step 6: Final answer
   x = 97,198.53