Finding the Fourth Proportional to 51,039.90, 70,439.00 and 30,622.73

Step by Step Solution

1. Step 1: Write the proportion equation
   51,039.90 : 70,439.00 = 30,622.73 : x
2. Step 2: Convert to fraction form
   51,039.90/70,439.00 = 30,622.73/x
3. Step 3: Cross multiply
   51,039.90x = 70,439.00 × 30,622.73
4. Step 4: Simplify right side
   51,039.90x = 2,157,033,973.16
5. Step 5: Solve for x
   x = 2,157,033,973.16/51,039.90
6. Step 6: Final answer
   x = 42,261.72