Finding the Fourth Proportional to 139,884.50, 193,034.57 and 79,454.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,884.50 : 193,034.57 = 79,454.95 : x
2. Step 2: Convert to fraction form
   139,884.50/193,034.57 = 79,454.95/x
3. Step 3: Cross multiply
   139,884.50x = 193,034.57 × 79,454.95
4. Step 4: Simplify right side
   139,884.50x = 15,337,552,249.60
5. Step 5: Solve for x
   x = 15,337,552,249.60/139,884.50
6. Step 6: Final answer
   x = 109,644.41