Finding the Fourth Proportional to 50,815.83, 70,128.33 and 30,672.36

Step by Step Solution

1. Step 1: Write the proportion equation
   50,815.83 : 70,128.33 = 30,672.36 : x
2. Step 2: Convert to fraction form
   50,815.83/70,128.33 = 30,672.36/x
3. Step 3: Cross multiply
   50,815.83x = 70,128.33 × 30,672.36
4. Step 4: Simplify right side
   50,815.83x = 2,151,001,383.96
5. Step 5: Solve for x
   x = 2,151,001,383.96/50,815.83
6. Step 6: Final answer
   x = 42,329.36