Finding the Fourth Proportional to 139,847.46, 193,003.41 and 85,396.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,847.46 : 193,003.41 = 85,396.62 : x
2. Step 2: Convert to fraction form
   139,847.46/193,003.41 = 85,396.62/x
3. Step 3: Cross multiply
   139,847.46x = 193,003.41 × 85,396.62
4. Step 4: Simplify right side
   139,847.46x = 16,481,838,862.47
5. Step 5: Solve for x
   x = 16,481,838,862.47/139,847.46
6. Step 6: Final answer
   x = 117,855.83