Finding the Fourth Proportional to 47,047.40, 64,928.82 and 31,104.20

Step by Step Solution

1. Step 1: Write the proportion equation
   47,047.40 : 64,928.82 = 31,104.20 : x
2. Step 2: Convert to fraction form
   47,047.40/64,928.82 = 31,104.20/x
3. Step 3: Cross multiply
   47,047.40x = 64,928.82 × 31,104.20
4. Step 4: Simplify right side
   47,047.40x = 2,019,559,003.04
5. Step 5: Solve for x
   x = 2,019,559,003.04/47,047.40
6. Step 6: Final answer
   x = 42,926.05