Finding the Fourth Proportional to 51,081.32, 70,475.42 and 30,930.54

Step by Step Solution

1. Step 1: Write the proportion equation
   51,081.32 : 70,475.42 = 30,930.54 : x
2. Step 2: Convert to fraction form
   51,081.32/70,475.42 = 30,930.54/x
3. Step 3: Cross multiply
   51,081.32x = 70,475.42 × 30,930.54
4. Step 4: Simplify right side
   51,081.32x = 2,179,842,642.67
5. Step 5: Solve for x
   x = 2,179,842,642.67/51,081.32
6. Step 6: Final answer
   x = 42,673.97