Finding the Fourth Proportional to 105,667.25, 145,820.13 and 57,922.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,667.25 : 145,820.13 = 57,922.61 : x
2. Step 2: Convert to fraction form
   105,667.25/145,820.13 = 57,922.61/x
3. Step 3: Cross multiply
   105,667.25x = 145,820.13 × 57,922.61
4. Step 4: Simplify right side
   105,667.25x = 8,446,281,791.04
5. Step 5: Solve for x
   x = 8,446,281,791.04/105,667.25
6. Step 6: Final answer
   x = 79,932.83