Finding the Fourth Proportional to 51,048.70, 70,448.72 and 30,909.26

Step by Step Solution

1. Step 1: Write the proportion equation
   51,048.70 : 70,448.72 = 30,909.26 : x
2. Step 2: Convert to fraction form
   51,048.70/70,448.72 = 30,909.26/x
3. Step 3: Cross multiply
   51,048.70x = 70,448.72 × 30,909.26
4. Step 4: Simplify right side
   51,048.70x = 2,177,517,803.15
5. Step 5: Solve for x
   x = 2,177,517,803.15/51,048.70
6. Step 6: Final answer
   x = 42,655.70