Finding the Fourth Proportional to 46,901.46, 64,724.01 and 25,680.78

Step by Step Solution

1. Step 1: Write the proportion equation
   46,901.46 : 64,724.01 = 25,680.78 : x
2. Step 2: Convert to fraction form
   46,901.46/64,724.01 = 25,680.78/x
3. Step 3: Cross multiply
   46,901.46x = 64,724.01 × 25,680.78
4. Step 4: Simplify right side
   46,901.46x = 1,662,163,061.53
5. Step 5: Solve for x
   x = 1,662,163,061.53/46,901.46
6. Step 6: Final answer
   x = 35,439.47