Finding the Fourth Proportional to 52,173.99, 71,976.20 and 30,945.51

Step by Step Solution

1. Step 1: Write the proportion equation
   52,173.99 : 71,976.20 = 30,945.51 : x
2. Step 2: Convert to fraction form
   52,173.99/71,976.20 = 30,945.51/x
3. Step 3: Cross multiply
   52,173.99x = 71,976.20 × 30,945.51
4. Step 4: Simplify right side
   52,173.99x = 2,227,340,062.13
5. Step 5: Solve for x
   x = 2,227,340,062.13/52,173.99
6. Step 6: Final answer
   x = 42,690.62