Finding the Fourth Proportional to 40,861.89, 56,391.81 and 30,772.53

Step by Step Solution

1. Step 1: Write the proportion equation
   40,861.89 : 56,391.81 = 30,772.53 : x
2. Step 2: Convert to fraction form
   40,861.89/56,391.81 = 30,772.53/x
3. Step 3: Cross multiply
   40,861.89x = 56,391.81 × 30,772.53
4. Step 4: Simplify right side
   40,861.89x = 1,735,318,664.98
5. Step 5: Solve for x
   x = 1,735,318,664.98/40,861.89
6. Step 6: Final answer
   x = 42,467.90