Finding the Fourth Proportional to 64,981.01, 89,663.69 and 36,686.09

Step by Step Solution

1. Step 1: Write the proportion equation
   64,981.01 : 89,663.69 = 36,686.09 : x
2. Step 2: Convert to fraction form
   64,981.01/89,663.69 = 36,686.09/x
3. Step 3: Cross multiply
   64,981.01x = 89,663.69 × 36,686.09
4. Step 4: Simplify right side
   64,981.01x = 3,289,410,017.64
5. Step 5: Solve for x
   x = 3,289,410,017.64/64,981.01
6. Step 6: Final answer
   x = 50,621.10