Finding the Fourth Proportional to 64,861.60, 89,498.71 and 36,561.82

Step by Step Solution

1. Step 1: Write the proportion equation
   64,861.60 : 89,498.71 = 36,561.82 : x
2. Step 2: Convert to fraction form
   64,861.60/89,498.71 = 36,561.82/x
3. Step 3: Cross multiply
   64,861.60x = 89,498.71 × 36,561.82
4. Step 4: Simplify right side
   64,861.60x = 3,272,235,725.25
5. Step 5: Solve for x
   x = 3,272,235,725.25/64,861.60
6. Step 6: Final answer
   x = 50,449.51