Finding the Fourth Proportional to 105,605.33, 158,406.53 and 25,643.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,605.33 : 158,406.53 = 25,643.93 : x
2. Step 2: Convert to fraction form
   105,605.33/158,406.53 = 25,643.93/x
3. Step 3: Cross multiply
   105,605.33x = 158,406.53 × 25,643.93
4. Step 4: Simplify right side
   105,605.33x = 4,062,165,046.61
5. Step 5: Solve for x
   x = 4,062,165,046.61/105,605.33
6. Step 6: Final answer
   x = 38,465.53