Finding the Fourth Proportional to 105,948.41, 146,338.32 and 79,209.77

Step by Step Solution

1. Step 1: Write the proportion equation
   105,948.41 : 146,338.32 = 79,209.77 : x
2. Step 2: Convert to fraction form
   105,948.41/146,338.32 = 79,209.77/x
3. Step 3: Cross multiply
   105,948.41x = 146,338.32 × 79,209.77
4. Step 4: Simplify right side
   105,948.41x = 11,591,423,937.69
5. Step 5: Solve for x
   x = 11,591,423,937.69/105,948.41
6. Step 6: Final answer
   x = 109,406.31