Finding the Fourth Proportional to 50,791.48, 70,111.06 and 30,649.20

Step by Step Solution

1. Step 1: Write the proportion equation
   50,791.48 : 70,111.06 = 30,649.20 : x
2. Step 2: Convert to fraction form
   50,791.48/70,111.06 = 30,649.20/x
3. Step 3: Cross multiply
   50,791.48x = 70,111.06 × 30,649.20
4. Step 4: Simplify right side
   50,791.48x = 2,148,847,900.15
5. Step 5: Solve for x
   x = 2,148,847,900.15/50,791.48
6. Step 6: Final answer
   x = 42,307.25