Finding the Fourth Proportional to 46,859.58, 64,667.15 and 25,639.30

Step by Step Solution

1. Step 1: Write the proportion equation
   46,859.58 : 64,667.15 = 25,639.30 : x
2. Step 2: Convert to fraction form
   46,859.58/64,667.15 = 25,639.30/x
3. Step 3: Cross multiply
   46,859.58x = 64,667.15 × 25,639.30
4. Step 4: Simplify right side
   46,859.58x = 1,658,020,361.43
5. Step 5: Solve for x
   x = 1,658,020,361.43/46,859.58
6. Step 6: Final answer
   x = 35,382.74