Finding the Fourth Proportional to 67,144.98, 92,609.72 and 64,167.06

Step by Step Solution

1. Step 1: Write the proportion equation
   67,144.98 : 92,609.72 = 64,167.06 : x
2. Step 2: Convert to fraction form
   67,144.98/92,609.72 = 64,167.06/x
3. Step 3: Cross multiply
   67,144.98x = 92,609.72 × 64,167.06
4. Step 4: Simplify right side
   67,144.98x = 5,942,493,459.82
5. Step 5: Solve for x
   x = 5,942,493,459.82/67,144.98
6. Step 6: Final answer
   x = 88,502.42