Finding the Fourth Proportional to 140,880.10, 211,514.55 and 111,331.30

Step by Step Solution

1. Step 1: Write the proportion equation
   140,880.10 : 211,514.55 = 111,331.30 : x
2. Step 2: Convert to fraction form
   140,880.10/211,514.55 = 111,331.30/x
3. Step 3: Cross multiply
   140,880.10x = 211,514.55 × 111,331.30
4. Step 4: Simplify right side
   140,880.10x = 23,548,189,820.42
5. Step 5: Solve for x
   x = 23,548,189,820.42/140,880.10
6. Step 6: Final answer
   x = 167,150.58