Finding the Fourth Proportional to 50,115.34, 69,139.88 and 28,606.30

Step by Step Solution

1. Step 1: Write the proportion equation
   50,115.34 : 69,139.88 = 28,606.30 : x
2. Step 2: Convert to fraction form
   50,115.34/69,139.88 = 28,606.30/x
3. Step 3: Cross multiply
   50,115.34x = 69,139.88 × 28,606.30
4. Step 4: Simplify right side
   50,115.34x = 1,977,836,231.18
5. Step 5: Solve for x
   x = 1,977,836,231.18/50,115.34
6. Step 6: Final answer
   x = 39,465.68