Finding the Fourth Proportional to 64,326.94, 88,660.34 and 42,778.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,326.94 : 88,660.34 = 42,778.16 : x
2. Step 2: Convert to fraction form
   64,326.94/88,660.34 = 42,778.16/x
3. Step 3: Cross multiply
   64,326.94x = 88,660.34 × 42,778.16
4. Step 4: Simplify right side
   64,326.94x = 3,792,726,431.83
5. Step 5: Solve for x
   x = 3,792,726,431.83/64,326.94
6. Step 6: Final answer
   x = 58,960.16