Finding the Fourth Proportional to 64,870.74, 89,501.36 and 36,570.96

Step by Step Solution

1. Step 1: Write the proportion equation
   64,870.74 : 89,501.36 = 36,570.96 : x
2. Step 2: Convert to fraction form
   64,870.74/89,501.36 = 36,570.96/x
3. Step 3: Cross multiply
   64,870.74x = 89,501.36 × 36,570.96
4. Step 4: Simplify right side
   64,870.74x = 3,273,150,473.65
5. Step 5: Solve for x
   x = 3,273,150,473.65/64,870.74
6. Step 6: Final answer
   x = 50,456.50