Finding the Fourth Proportional to 64,828, 89,462.72 and 35,020

Step by Step Solution

1. Step 1: Write the proportion equation
   64,828 : 89,462.72 = 35,020 : x
2. Step 2: Convert to fraction form
   64,828/89,462.72 = 35,020/x
3. Step 3: Cross multiply
   64,828x = 89,462.72 × 35,020
4. Step 4: Simplify right side
   64,828x = 3,132,984,454.40
5. Step 5: Solve for x
   x = 3,132,984,454.40/64,828
6. Step 6: Final answer
   x = 48,327.64