Finding the Fourth Proportional to 111,451.22, 153,671 and 91,233.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,451.22 : 153,671 = 91,233.62 : x
2. Step 2: Convert to fraction form
   111,451.22/153,671 = 91,233.62/x
3. Step 3: Cross multiply
   111,451.22x = 153,671 × 91,233.62
4. Step 4: Simplify right side
   111,451.22x = 14,019,961,619.02
5. Step 5: Solve for x
   x = 14,019,961,619.02/111,451.22
6. Step 6: Final answer
   x = 125,794.60