Finding the Fourth Proportional to 64,949.58, 89,617.32 and 38,100.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,949.58 : 89,617.32 = 38,100.78 : x
2. Step 2: Convert to fraction form
   64,949.58/89,617.32 = 38,100.78/x
3. Step 3: Cross multiply
   64,949.58x = 89,617.32 × 38,100.78
4. Step 4: Simplify right side
   64,949.58x = 3,414,489,793.51
5. Step 5: Solve for x
   x = 3,414,489,793.51/64,949.58
6. Step 6: Final answer
   x = 52,571.39