Finding the Fourth Proportional to 111,443.22, 153,659.97 and 91,225.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,443.22 : 153,659.97 = 91,225.62 : x
2. Step 2: Convert to fraction form
   111,443.22/153,659.97 = 91,225.62/x
3. Step 3: Cross multiply
   111,443.22x = 153,659.97 × 91,225.62
4. Step 4: Simplify right side
   111,443.22x = 14,017,726,032.43
5. Step 5: Solve for x
   x = 14,017,726,032.43/111,443.22
6. Step 6: Final answer
   x = 125,783.57