Finding the Fourth Proportional to 42,155.92, 58,166.76 and 25,390

Step by Step Solution

1. Step 1: Write the proportion equation
   42,155.92 : 58,166.76 = 25,390 : x
2. Step 2: Convert to fraction form
   42,155.92/58,166.76 = 25,390/x
3. Step 3: Cross multiply
   42,155.92x = 58,166.76 × 25,390
4. Step 4: Simplify right side
   42,155.92x = 1,476,854,036.40
5. Step 5: Solve for x
   x = 1,476,854,036.40/42,155.92
6. Step 6: Final answer
   x = 35,033.13