Finding the Fourth Proportional to 64,856.89, 89,502.74 and 36,563.05

Step by Step Solution

1. Step 1: Write the proportion equation
   64,856.89 : 89,502.74 = 36,563.05 : x
2. Step 2: Convert to fraction form
   64,856.89/89,502.74 = 36,563.05/x
3. Step 3: Cross multiply
   64,856.89x = 89,502.74 × 36,563.05
4. Step 4: Simplify right side
   64,856.89x = 3,272,493,157.76
5. Step 5: Solve for x
   x = 3,272,493,157.76/64,856.89
6. Step 6: Final answer
   x = 50,457.14