Finding the Fourth Proportional to 42,243.26, 63,338.16 and 35,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,243.26 : 63,338.16 = 35,978.72 : x
2. Step 2: Convert to fraction form
   42,243.26/63,338.16 = 35,978.72/x
3. Step 3: Cross multiply
   42,243.26x = 63,338.16 × 35,978.72
4. Step 4: Simplify right side
   42,243.26x = 2,278,825,923.96
5. Step 5: Solve for x
   x = 2,278,825,923.96/42,243.26
6. Step 6: Final answer
   x = 53,945.31