Finding the Fourth Proportional to 64,870.76, 89,521.67 and 36,576.45

Step by Step Solution

1. Step 1: Write the proportion equation
   64,870.76 : 89,521.67 = 36,576.45 : x
2. Step 2: Convert to fraction form
   64,870.76/89,521.67 = 36,576.45/x
3. Step 3: Cross multiply
   64,870.76x = 89,521.67 × 36,576.45
4. Step 4: Simplify right side
   64,870.76x = 3,274,384,886.67
5. Step 5: Solve for x
   x = 3,274,384,886.67/64,870.76
6. Step 6: Final answer
   x = 50,475.51