Finding the Fourth Proportional to 66,598.56, 91,896.72 and 64,806.56

Step by Step Solution

1. Step 1: Write the proportion equation
   66,598.56 : 91,896.72 = 64,806.56 : x
2. Step 2: Convert to fraction form
   66,598.56/91,896.72 = 64,806.56/x
3. Step 3: Cross multiply
   66,598.56x = 91,896.72 × 64,806.56
4. Step 4: Simplify right side
   66,598.56x = 5,955,510,298.48
5. Step 5: Solve for x
   x = 5,955,510,298.48/66,598.56
6. Step 6: Final answer
   x = 89,424.01