Finding the Fourth Proportional to 42,131.40, 58,137.78 and 25,994.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,131.40 : 58,137.78 = 25,994.16 : x
2. Step 2: Convert to fraction form
   42,131.40/58,137.78 = 25,994.16/x
3. Step 3: Cross multiply
   42,131.40x = 58,137.78 × 25,994.16
4. Step 4: Simplify right side
   42,131.40x = 1,511,242,755.36
5. Step 5: Solve for x
   x = 1,511,242,755.36/42,131.40
6. Step 6: Final answer
   x = 35,869.75