Finding the Fourth Proportional to 139,899.48, 193,055.28 and 79,469.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,899.48 : 193,055.28 = 79,469.94 : x
2. Step 2: Convert to fraction form
   139,899.48/193,055.28 = 79,469.94/x
3. Step 3: Cross multiply
   139,899.48x = 193,055.28 × 79,469.94
4. Step 4: Simplify right side
   139,899.48x = 15,342,091,518.28
5. Step 5: Solve for x
   x = 15,342,091,518.28/139,899.48
6. Step 6: Final answer
   x = 109,665.11