Finding the Fourth Proportional to 42,120.49, 63,149.15 and 25,477.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,120.49 : 63,149.15 = 25,477.12 : x
2. Step 2: Convert to fraction form
   42,120.49/63,149.15 = 25,477.12/x
3. Step 3: Cross multiply
   42,120.49x = 63,149.15 × 25,477.12
4. Step 4: Simplify right side
   42,120.49x = 1,608,858,472.45
5. Step 5: Solve for x
   x = 1,608,858,472.45/42,120.49
6. Step 6: Final answer
   x = 38,196.58