Finding the Fourth Proportional to 66,979.50, 92,431.71 and 37,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,979.50 : 92,431.71 = 37,171.50 : x
2. Step 2: Convert to fraction form
   66,979.50/92,431.71 = 37,171.50/x
3. Step 3: Cross multiply
   66,979.50x = 92,431.71 × 37,171.50
4. Step 4: Simplify right side
   66,979.50x = 3,435,825,308.27
5. Step 5: Solve for x
   x = 3,435,825,308.27/66,979.50
6. Step 6: Final answer
   x = 51,296.67