Finding the Fourth Proportional to 111,279.99, 167,029.35 and 81,613.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,279.99 : 167,029.35 = 81,613.35 : x
2. Step 2: Convert to fraction form
   111,279.99/167,029.35 = 81,613.35/x
3. Step 3: Cross multiply
   111,279.99x = 167,029.35 × 81,613.35
4. Step 4: Simplify right side
   111,279.99x = 13,631,824,801.82
5. Step 5: Solve for x
   x = 13,631,824,801.82/111,279.99
6. Step 6: Final answer
   x = 122,500.23