Finding the Fourth Proportional to 138,144.69, 207,196.47 and 38,294.46

Step by Step Solution

1. Step 1: Write the proportion equation
   138,144.69 : 207,196.47 = 38,294.46 : x
2. Step 2: Convert to fraction form
   138,144.69/207,196.47 = 38,294.46/x
3. Step 3: Cross multiply
   138,144.69x = 207,196.47 × 38,294.46
4. Step 4: Simplify right side
   138,144.69x = 7,934,476,932.56
5. Step 5: Solve for x
   x = 7,934,476,932.56/138,144.69
6. Step 6: Final answer
   x = 57,435.99