Finding the Fourth Proportional to 67,271.65, 92,162.57 and 64,749.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67,271.65 : 92,162.57 = 64,749.31 : x
2. Step 2: Convert to fraction form
   67,271.65/92,162.57 = 64,749.31/x
3. Step 3: Cross multiply
   67,271.65x = 92,162.57 × 64,749.31
4. Step 4: Simplify right side
   67,271.65x = 5,967,462,815.33
5. Step 5: Solve for x
   x = 5,967,462,815.33/67,271.65
6. Step 6: Final answer
   x = 88,706.95