Finding the Fourth Proportional to 50,991.30, 70,369.56 and 30,851.88

Step by Step Solution

1. Step 1: Write the proportion equation
   50,991.30 : 70,369.56 = 30,851.88 : x
2. Step 2: Convert to fraction form
   50,991.30/70,369.56 = 30,851.88/x
3. Step 3: Cross multiply
   50,991.30x = 70,369.56 × 30,851.88
4. Step 4: Simplify right side
   50,991.30x = 2,171,033,220.77
5. Step 5: Solve for x
   x = 2,171,033,220.77/50,991.30
6. Step 6: Final answer
   x = 42,576.54