Finding the Fourth Proportional to 50,998.50, 70,384.53 and 28,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,998.50 : 70,384.53 = 28,642.50 : x
2. Step 2: Convert to fraction form
   50,998.50/70,384.53 = 28,642.50/x
3. Step 3: Cross multiply
   50,998.50x = 70,384.53 × 28,642.50
4. Step 4: Simplify right side
   50,998.50x = 2,015,988,900.53
5. Step 5: Solve for x
   x = 2,015,988,900.53/50,998.50
6. Step 6: Final answer
   x = 39,530.36