Finding the Fourth Proportional to 64,706.56, 89,284.80 and 36,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,706.56 : 89,284.80 = 36,406.72 : x
2. Step 2: Convert to fraction form
   64,706.56/89,284.80 = 36,406.72/x
3. Step 3: Cross multiply
   64,706.56x = 89,284.80 × 36,406.72
4. Step 4: Simplify right side
   64,706.56x = 3,250,566,713.86
5. Step 5: Solve for x
   x = 3,250,566,713.86/64,706.56
6. Step 6: Final answer
   x = 50,235.50