Finding the Fourth Proportional to 139,715.52, 209,575.25 and 39,875.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,715.52 : 209,575.25 = 39,875.73 : x
2. Step 2: Convert to fraction form
   139,715.52/209,575.25 = 39,875.73/x
3. Step 3: Cross multiply
   139,715.52x = 209,575.25 × 39,875.73
4. Step 4: Simplify right side
   139,715.52x = 8,356,965,884.30
5. Step 5: Solve for x
   x = 8,356,965,884.30/139,715.52
6. Step 6: Final answer
   x = 59,814.16