Finding the Fourth Proportional to 47,120.10, 65,017.89 and 31,226.10

Step by Step Solution

1. Step 1: Write the proportion equation
   47,120.10 : 65,017.89 = 31,226.10 : x
2. Step 2: Convert to fraction form
   47,120.10/65,017.89 = 31,226.10/x
3. Step 3: Cross multiply
   47,120.10x = 65,017.89 × 31,226.10
4. Step 4: Simplify right side
   47,120.10x = 2,030,255,134.93
5. Step 5: Solve for x
   x = 2,030,255,134.93/47,120.10
6. Step 6: Final answer
   x = 43,086.82