Finding the Fourth Proportional to 51,048.06, 70,429.50 and 30,897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   51,048.06 : 70,429.50 = 30,897.30 : x
2. Step 2: Convert to fraction form
   51,048.06/70,429.50 = 30,897.30/x
3. Step 3: Cross multiply
   51,048.06x = 70,429.50 × 30,897.30
4. Step 4: Simplify right side
   51,048.06x = 2,176,081,390.35
5. Step 5: Solve for x
   x = 2,176,081,390.35/51,048.06
6. Step 6: Final answer
   x = 42,628.09