Finding the Fourth Proportional to 46,619.72, 64,359.04 and 31,591.78

Step by Step Solution

1. Step 1: Write the proportion equation
   46,619.72 : 64,359.04 = 31,591.78 : x
2. Step 2: Convert to fraction form
   46,619.72/64,359.04 = 31,591.78/x
3. Step 3: Cross multiply
   46,619.72x = 64,359.04 × 31,591.78
4. Step 4: Simplify right side
   46,619.72x = 2,033,216,632.69
5. Step 5: Solve for x
   x = 2,033,216,632.69/46,619.72
6. Step 6: Final answer
   x = 43,612.80