Finding the Fourth Proportional to 64,600.72, 89,138.88 and 36,300.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,600.72 : 89,138.88 = 36,300.88 : x
2. Step 2: Convert to fraction form
   64,600.72/89,138.88 = 36,300.88/x
3. Step 3: Cross multiply
   64,600.72x = 89,138.88 × 36,300.88
4. Step 4: Simplify right side
   64,600.72x = 3,235,819,786.21
5. Step 5: Solve for x
   x = 3,235,819,786.21/64,600.72
6. Step 6: Final answer
   x = 50,089.53