Finding the Fourth Proportional to 65,473.12, 90,352.80 and 35,665.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,473.12 : 90,352.80 = 35,665.12 : x
2. Step 2: Convert to fraction form
   65,473.12/90,352.80 = 35,665.12/x
3. Step 3: Cross multiply
   65,473.12x = 90,352.80 × 35,665.12
4. Step 4: Simplify right side
   65,473.12x = 3,222,443,454.34
5. Step 5: Solve for x
   x = 3,222,443,454.34/65,473.12
6. Step 6: Final answer
   x = 49,217.81