Finding the Fourth Proportional to 67,342.82, 92,928.72 and 37,128.40

Step by Step Solution

1. Step 1: Write the proportion equation
   67,342.82 : 92,928.72 = 37,128.40 : x
2. Step 2: Convert to fraction form
   67,342.82/92,928.72 = 37,128.40/x
3. Step 3: Cross multiply
   67,342.82x = 92,928.72 × 37,128.40
4. Step 4: Simplify right side
   67,342.82x = 3,450,294,687.65
5. Step 5: Solve for x
   x = 3,450,294,687.65/67,342.82
6. Step 6: Final answer
   x = 51,234.78