Finding the Fourth Proportional to 47,020.62, 64,906.52 and 31,920.03

Step by Step Solution

1. Step 1: Write the proportion equation
   47,020.62 : 64,906.52 = 31,920.03 : x
2. Step 2: Convert to fraction form
   47,020.62/64,906.52 = 31,920.03/x
3. Step 3: Cross multiply
   47,020.62x = 64,906.52 × 31,920.03
4. Step 4: Simplify right side
   47,020.62x = 2,071,818,065.60
5. Step 5: Solve for x
   x = 2,071,818,065.60/47,020.62
6. Step 6: Final answer
   x = 44,061.90