Finding the Fourth Proportional to 78,505.50, 117,797.21 and 31,119.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,505.50 : 117,797.21 = 31,119.59 : x
2. Step 2: Convert to fraction form
   78,505.50/117,797.21 = 31,119.59/x
3. Step 3: Cross multiply
   78,505.50x = 117,797.21 × 31,119.59
4. Step 4: Simplify right side
   78,505.50x = 3,665,801,221.46
5. Step 5: Solve for x
   x = 3,665,801,221.46/78,505.50
6. Step 6: Final answer
   x = 46,694.83