Finding the Fourth Proportional to 111,830.98, 154,383.88 and 86,279.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,830.98 : 154,383.88 = 86,279.98 : x
2. Step 2: Convert to fraction form
   111,830.98/154,383.88 = 86,279.98/x
3. Step 3: Cross multiply
   111,830.98x = 154,383.88 × 86,279.98
4. Step 4: Simplify right side
   111,830.98x = 13,320,238,078.72
5. Step 5: Solve for x
   x = 13,320,238,078.72/111,830.98
6. Step 6: Final answer
   x = 119,110.45