Finding the Fourth Proportional to 52,690.13, 78,939.50 and 30,456.54

Step by Step Solution

1. Step 1: Write the proportion equation
   52,690.13 : 78,939.50 = 30,456.54 : x
2. Step 2: Convert to fraction form
   52,690.13/78,939.50 = 30,456.54/x
3. Step 3: Cross multiply
   52,690.13x = 78,939.50 × 30,456.54
4. Step 4: Simplify right side
   52,690.13x = 2,404,223,887.05
5. Step 5: Solve for x
   x = 2,404,223,887.05/52,690.13
6. Step 6: Final answer
   x = 45,629.49