Finding the Fourth Proportional to 69,086.94, 103,630.38 and 31,091.80

Step by Step Solution

1. Step 1: Write the proportion equation
   69,086.94 : 103,630.38 = 31,091.80 : x
2. Step 2: Convert to fraction form
   69,086.94/103,630.38 = 31,091.80/x
3. Step 3: Cross multiply
   69,086.94x = 103,630.38 × 31,091.80
4. Step 4: Simplify right side
   69,086.94x = 3,222,055,048.88
5. Step 5: Solve for x
   x = 3,222,055,048.88/69,086.94
6. Step 6: Final answer
   x = 46,637.69