Finding the Fourth Proportional to 115,619.85, 173,441.31 and 31,381.37

Step by Step Solution

1. Step 1: Write the proportion equation
   115,619.85 : 173,441.31 = 31,381.37 : x
2. Step 2: Convert to fraction form
   115,619.85/173,441.31 = 31,381.37/x
3. Step 3: Cross multiply
   115,619.85x = 173,441.31 × 31,381.37
4. Step 4: Simplify right side
   115,619.85x = 5,442,825,055.19
5. Step 5: Solve for x
   x = 5,442,825,055.19/115,619.85
6. Step 6: Final answer
   x = 47,075.18