Finding the Fourth Proportional to 140,743.96, 194,111.58 and 100,386.52

Step by Step Solution

1. Step 1: Write the proportion equation
   140,743.96 : 194,111.58 = 100,386.52 : x
2. Step 2: Convert to fraction form
   140,743.96/194,111.58 = 100,386.52/x
3. Step 3: Cross multiply
   140,743.96x = 194,111.58 × 100,386.52
4. Step 4: Simplify right side
   140,743.96x = 19,486,186,007.90
5. Step 5: Solve for x
   x = 19,486,186,007.90/140,743.96
6. Step 6: Final answer
   x = 138,451.31