Finding the Fourth Proportional to 105,917.67, 146,261.25 and 79,013.43

Step by Step Solution

1. Step 1: Write the proportion equation
   105,917.67 : 146,261.25 = 79,013.43 : x
2. Step 2: Convert to fraction form
   105,917.67/146,261.25 = 79,013.43/x
3. Step 3: Cross multiply
   105,917.67x = 146,261.25 × 79,013.43
4. Step 4: Simplify right side
   105,917.67x = 11,556,603,038.59
5. Step 5: Solve for x
   x = 11,556,603,038.59/105,917.67
6. Step 6: Final answer
   x = 109,109.30