Finding the Fourth Proportional to 65,321, 90,143.62 and 35,513.64

Step by Step Solution

1. Step 1: Write the proportion equation
   65,321 : 90,143.62 = 35,513.64 : x
2. Step 2: Convert to fraction form
   65,321/90,143.62 = 35,513.64/x
3. Step 3: Cross multiply
   65,321x = 90,143.62 × 35,513.64
4. Step 4: Simplify right side
   65,321x = 3,201,328,068.98
5. Step 5: Solve for x
   x = 3,201,328,068.98/65,321
6. Step 6: Final answer
   x = 49,009.17