Finding the Fourth Proportional to 131,008.64, 196,493.82 and 64,430.90

Step by Step Solution

1. Step 1: Write the proportion equation
   131,008.64 : 196,493.82 = 64,430.90 : x
2. Step 2: Convert to fraction form
   131,008.64/196,493.82 = 64,430.90/x
3. Step 3: Cross multiply
   131,008.64x = 196,493.82 × 64,430.90
4. Step 4: Simplify right side
   131,008.64x = 12,660,273,667.04
5. Step 5: Solve for x
   x = 12,660,273,667.04/131,008.64
6. Step 6: Final answer
   x = 96,636.94