Finding the Fourth Proportional to 50,085.72, 69,118.32 and 31,222.92

Step by Step Solution

1. Step 1: Write the proportion equation
   50,085.72 : 69,118.32 = 31,222.92 : x
2. Step 2: Convert to fraction form
   50,085.72/69,118.32 = 31,222.92/x
3. Step 3: Cross multiply
   50,085.72x = 69,118.32 × 31,222.92
4. Step 4: Simplify right side
   50,085.72x = 2,158,075,775.89
5. Step 5: Solve for x
   x = 2,158,075,775.89/50,085.72
6. Step 6: Final answer
   x = 43,087.65