Finding the Fourth Proportional to 140,714.16, 194,101.56 and 121,818.48

Step by Step Solution

1. Step 1: Write the proportion equation
   140,714.16 : 194,101.56 = 121,818.48 : x
2. Step 2: Convert to fraction form
   140,714.16/194,101.56 = 121,818.48/x
3. Step 3: Cross multiply
   140,714.16x = 194,101.56 × 121,818.48
4. Step 4: Simplify right side
   140,714.16x = 23,645,157,004.83
5. Step 5: Solve for x
   x = 23,645,157,004.83/140,714.16
6. Step 6: Final answer
   x = 168,036.80