Finding the Fourth Proportional to 65,018.69, 89,725.89 and 35,210.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65,018.69 : 89,725.89 = 35,210.69 : x
2. Step 2: Convert to fraction form
   65,018.69/89,725.89 = 35,210.69/x
3. Step 3: Cross multiply
   65,018.69x = 89,725.89 × 35,210.69
4. Step 4: Simplify right side
   65,018.69x = 3,159,310,497.76
5. Step 5: Solve for x
   x = 3,159,310,497.76/65,018.69
6. Step 6: Final answer
   x = 48,590.81