Finding the Fourth Proportional to 108,111.24, 162,166.85 and 78,716.13

Step by Step Solution

1. Step 1: Write the proportion equation
   108,111.24 : 162,166.85 = 78,716.13 : x
2. Step 2: Convert to fraction form
   108,111.24/162,166.85 = 78,716.13/x
3. Step 3: Cross multiply
   108,111.24x = 162,166.85 × 78,716.13
4. Step 4: Simplify right side
   108,111.24x = 12,765,146,452.71
5. Step 5: Solve for x
   x = 12,765,146,452.71/108,111.24
6. Step 6: Final answer
   x = 118,074.18