Finding the Fourth Proportional to 64,858.86, 89,499.87 and 36,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,858.86 : 89,499.87 = 36,571.50 : x
2. Step 2: Convert to fraction form
   64,858.86/89,499.87 = 36,571.50/x
3. Step 3: Cross multiply
   64,858.86x = 89,499.87 × 36,571.50
4. Step 4: Simplify right side
   64,858.86x = 3,273,144,495.71
5. Step 5: Solve for x
   x = 3,273,144,495.71/64,858.86
6. Step 6: Final answer
   x = 50,465.65