Finding the Fourth Proportional to 66,978.50, 92,430.33 and 37,170.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,978.50 : 92,430.33 = 37,170.50 : x
2. Step 2: Convert to fraction form
   66,978.50/92,430.33 = 37,170.50/x
3. Step 3: Cross multiply
   66,978.50x = 92,430.33 × 37,170.50
4. Step 4: Simplify right side
   66,978.50x = 3,435,681,581.27
5. Step 5: Solve for x
   x = 3,435,681,581.27/66,978.50
6. Step 6: Final answer
   x = 51,295.29