Finding the Fourth Proportional to 42,101.42, 63,040.28 and 25,438.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,101.42 : 63,040.28 = 25,438.91 : x
2. Step 2: Convert to fraction form
   42,101.42/63,040.28 = 25,438.91/x
3. Step 3: Cross multiply
   42,101.42x = 63,040.28 × 25,438.91
4. Step 4: Simplify right side
   42,101.42x = 1,603,675,566.90
5. Step 5: Solve for x
   x = 1,603,675,566.90/42,101.42
6. Step 6: Final answer
   x = 38,090.78