Finding the Fourth Proportional to 66,978.56, 92,431.61 and 36,766.69

Step by Step Solution

1. Step 1: Write the proportion equation
   66,978.56 : 92,431.61 = 36,766.69 : x
2. Step 2: Convert to fraction form
   66,978.56/92,431.61 = 36,766.69/x
3. Step 3: Cross multiply
   66,978.56x = 92,431.61 × 36,766.69
4. Step 4: Simplify right side
   66,978.56x = 3,398,404,282.78
5. Step 5: Solve for x
   x = 3,398,404,282.78/66,978.56
6. Step 6: Final answer
   x = 50,738.69