Finding the Fourth Proportional to 30,780.24, 42,548.46 and 27,456

Step by Step Solution

1. Step 1: Write the proportion equation
   30,780.24 : 42,548.46 = 27,456 : x
2. Step 2: Convert to fraction form
   30,780.24/42,548.46 = 27,456/x
3. Step 3: Cross multiply
   30,780.24x = 42,548.46 × 27,456
4. Step 4: Simplify right side
   30,780.24x = 1,168,210,517.76
5. Step 5: Solve for x
   x = 1,168,210,517.76/30,780.24
6. Step 6: Final answer
   x = 37,953.26