Finding the Fourth Proportional to 64,991.59, 89,688.62 and 35,183.59

Step by Step Solution

1. Step 1: Write the proportion equation
   64,991.59 : 89,688.62 = 35,183.59 : x
2. Step 2: Convert to fraction form
   64,991.59/89,688.62 = 35,183.59/x
3. Step 3: Cross multiply
   64,991.59x = 89,688.62 × 35,183.59
4. Step 4: Simplify right side
   64,991.59x = 3,155,567,633.75
5. Step 5: Solve for x
   x = 3,155,567,633.75/64,991.59
6. Step 6: Final answer
   x = 48,553.48