Finding the Fourth Proportional to 47,728.81, 65,844.16 and 30,726.96

Step by Step Solution

1. Step 1: Write the proportion equation
   47,728.81 : 65,844.16 = 30,726.96 : x
2. Step 2: Convert to fraction form
   47,728.81/65,844.16 = 30,726.96/x
3. Step 3: Cross multiply
   47,728.81x = 65,844.16 × 30,726.96
4. Step 4: Simplify right side
   47,728.81x = 2,023,190,870.55
5. Step 5: Solve for x
   x = 2,023,190,870.55/47,728.81
6. Step 6: Final answer
   x = 42,389.30