Finding the Fourth Proportional to 64,494.52, 89,007.84 and 37,638.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,494.52 : 89,007.84 = 37,638.78 : x
2. Step 2: Convert to fraction form
   64,494.52/89,007.84 = 37,638.78/x
3. Step 3: Cross multiply
   64,494.52x = 89,007.84 × 37,638.78
4. Step 4: Simplify right side
   64,494.52x = 3,350,146,508.04
5. Step 5: Solve for x
   x = 3,350,146,508.04/64,494.52
6. Step 6: Final answer
   x = 51,944.67