Finding the Fourth Proportional to 64,855.94, 89,499.98 and 36,561.64

Step by Step Solution

1. Step 1: Write the proportion equation
   64,855.94 : 89,499.98 = 36,561.64 : x
2. Step 2: Convert to fraction form
   64,855.94/89,499.98 = 36,561.64/x
3. Step 3: Cross multiply
   64,855.94x = 89,499.98 × 36,561.64
4. Step 4: Simplify right side
   64,855.94x = 3,272,266,048.77
5. Step 5: Solve for x
   x = 3,272,266,048.77/64,855.94
6. Step 6: Final answer
   x = 50,454.38