Finding the Fourth Proportional to 51,074.72, 70,484.80 and 30,935.36

Step by Step Solution

1. Step 1: Write the proportion equation
   51,074.72 : 70,484.80 = 30,935.36 : x
2. Step 2: Convert to fraction form
   51,074.72/70,484.80 = 30,935.36/x
3. Step 3: Cross multiply
   51,074.72x = 70,484.80 × 30,935.36
4. Step 4: Simplify right side
   51,074.72x = 2,180,472,662.53
5. Step 5: Solve for x
   x = 2,180,472,662.53/51,074.72
6. Step 6: Final answer
   x = 42,691.82