Finding the Fourth Proportional to 42,867.63, 64,223.69 and 31,650.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,867.63 : 64,223.69 = 31,650.75 : x
2. Step 2: Convert to fraction form
   42,867.63/64,223.69 = 31,650.75/x
3. Step 3: Cross multiply
   42,867.63x = 64,223.69 × 31,650.75
4. Step 4: Simplify right side
   42,867.63x = 2,032,727,798.01
5. Step 5: Solve for x
   x = 2,032,727,798.01/42,867.63
6. Step 6: Final answer
   x = 47,418.71