Finding the Fourth Proportional to 123,915.38, 185,863.50 and 39,684.35

Step by Step Solution

1. Step 1: Write the proportion equation
   123,915.38 : 185,863.50 = 39,684.35 : x
2. Step 2: Convert to fraction form
   123,915.38/185,863.50 = 39,684.35/x
3. Step 3: Cross multiply
   123,915.38x = 185,863.50 × 39,684.35
4. Step 4: Simplify right side
   123,915.38x = 7,375,872,650.88
5. Step 5: Solve for x
   x = 7,375,872,650.88/123,915.38
6. Step 6: Final answer
   x = 59,523.47