Finding the Fourth Proportional to 50,996.79, 70,380.32 and 30,858.63

Step by Step Solution

1. Step 1: Write the proportion equation
   50,996.79 : 70,380.32 = 30,858.63 : x
2. Step 2: Convert to fraction form
   50,996.79/70,380.32 = 30,858.63/x
3. Step 3: Cross multiply
   50,996.79x = 70,380.32 × 30,858.63
4. Step 4: Simplify right side
   50,996.79x = 2,171,840,099.87
5. Step 5: Solve for x
   x = 2,171,840,099.87/50,996.79
6. Step 6: Final answer
   x = 42,587.78