Finding the Fourth Proportional to 50,443.58, 69,578.80 and 31,547.90

Step by Step Solution

1. Step 1: Write the proportion equation
   50,443.58 : 69,578.80 = 31,547.90 : x
2. Step 2: Convert to fraction form
   50,443.58/69,578.80 = 31,547.90/x
3. Step 3: Cross multiply
   50,443.58x = 69,578.80 × 31,547.90
4. Step 4: Simplify right side
   50,443.58x = 2,195,064,597.76
5. Step 5: Solve for x
   x = 2,195,064,597.76/50,443.58
6. Step 6: Final answer
   x = 43,515.25