Finding the Fourth Proportional to 64,917.10, 89,585.86 and 35,109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   64,917.10 : 89,585.86 = 35,109.10 : x
2. Step 2: Convert to fraction form
   64,917.10/89,585.86 = 35,109.10/x
3. Step 3: Cross multiply
   64,917.10x = 89,585.86 × 35,109.10
4. Step 4: Simplify right side
   64,917.10x = 3,145,278,605.59
5. Step 5: Solve for x
   x = 3,145,278,605.59/64,917.10
6. Step 6: Final answer
   x = 48,450.70