Finding the Fourth Proportional to 113,217.93, 155,970.71 and 79,162.70

Step by Step Solution

1. Step 1: Write the proportion equation
   113,217.93 : 155,970.71 = 79,162.70 : x
2. Step 2: Convert to fraction form
   113,217.93/155,970.71 = 79,162.70/x
3. Step 3: Cross multiply
   113,217.93x = 155,970.71 × 79,162.70
4. Step 4: Simplify right side
   113,217.93x = 12,347,061,348.85
5. Step 5: Solve for x
   x = 12,347,061,348.85/113,217.93
6. Step 6: Final answer
   x = 109,055.71