Finding the Fourth Proportional to 64,777.36, 89,415.15 and 37,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,777.36 : 89,415.15 = 37,928.50 : x
2. Step 2: Convert to fraction form
   64,777.36/89,415.15 = 37,928.50/x
3. Step 3: Cross multiply
   64,777.36x = 89,415.15 × 37,928.50
4. Step 4: Simplify right side
   64,777.36x = 3,391,382,516.78
5. Step 5: Solve for x
   x = 3,391,382,516.78/64,777.36
6. Step 6: Final answer
   x = 52,354.44