Finding the Fourth Proportional to 65,538.72, 90,442.08 and 35,730.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,538.72 : 90,442.08 = 35,730.72 : x
2. Step 2: Convert to fraction form
   65,538.72/90,442.08 = 35,730.72/x
3. Step 3: Cross multiply
   65,538.72x = 90,442.08 × 35,730.72
4. Step 4: Simplify right side
   65,538.72x = 3,231,560,636.70
5. Step 5: Solve for x
   x = 3,231,560,636.70/65,538.72
6. Step 6: Final answer
   x = 49,307.66