Finding the Fourth Proportional to 138,150.72, 207,205.47 and 38,300.49

Step by Step Solution

1. Step 1: Write the proportion equation
   138,150.72 : 207,205.47 = 38,300.49 : x
2. Step 2: Convert to fraction form
   138,150.72/207,205.47 = 38,300.49/x
3. Step 3: Cross multiply
   138,150.72x = 207,205.47 × 38,300.49
4. Step 4: Simplify right side
   138,150.72x = 7,936,071,031.68
5. Step 5: Solve for x
   x = 7,936,071,031.68/138,150.72
6. Step 6: Final answer
   x = 57,445.02