Finding the Fourth Proportional to 50,638.40, 69,882.72 and 31,785.92

Step by Step Solution

1. Step 1: Write the proportion equation
   50,638.40 : 69,882.72 = 31,785.92 : x
2. Step 2: Convert to fraction form
   50,638.40/69,882.72 = 31,785.92/x
3. Step 3: Cross multiply
   50,638.40x = 69,882.72 × 31,785.92
4. Step 4: Simplify right side
   50,638.40x = 2,221,286,547.30
5. Step 5: Solve for x
   x = 2,221,286,547.30/50,638.40
6. Step 6: Final answer
   x = 43,865.65