Finding the Fourth Proportional to 111,336.93, 153,648.90 and 79,581.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111,336.93 : 153,648.90 = 79,581.69 : x
2. Step 2: Convert to fraction form
   111,336.93/153,648.90 = 79,581.69/x
3. Step 3: Cross multiply
   111,336.93x = 153,648.90 × 79,581.69
4. Step 4: Simplify right side
   111,336.93x = 12,227,639,128.64
5. Step 5: Solve for x
   x = 12,227,639,128.64/111,336.93
6. Step 6: Final answer
   x = 109,825.55