Finding the Fourth Proportional to 64,870.56, 89,522.73 and 36,570.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,870.56 : 89,522.73 = 36,570.78 : x
2. Step 2: Convert to fraction form
   64,870.56/89,522.73 = 36,570.78/x
3. Step 3: Cross multiply
   64,870.56x = 89,522.73 × 36,570.78
4. Step 4: Simplify right side
   64,870.56x = 3,273,916,063.83
5. Step 5: Solve for x
   x = 3,273,916,063.83/64,870.56
6. Step 6: Final answer
   x = 50,468.44