Finding the Fourth Proportional to 78,066.81, 117,116.42 and 31,323.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,066.81 : 117,116.42 = 31,323.33 : x
2. Step 2: Convert to fraction form
   78,066.81/117,116.42 = 31,323.33/x
3. Step 3: Cross multiply
   78,066.81x = 117,116.42 × 31,323.33
4. Step 4: Simplify right side
   78,066.81x = 3,668,476,115.46
5. Step 5: Solve for x
   x = 3,668,476,115.46/78,066.81
6. Step 6: Final answer
   x = 46,991.50