Finding the Fourth Proportional to 139,734.76, 192,801.18 and 79,291.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,734.76 : 192,801.18 = 79,291.72 : x
2. Step 2: Convert to fraction form
   139,734.76/192,801.18 = 79,291.72/x
3. Step 3: Cross multiply
   139,734.76x = 192,801.18 × 79,291.72
4. Step 4: Simplify right side
   139,734.76x = 15,287,537,180.23
5. Step 5: Solve for x
   x = 15,287,537,180.23/139,734.76
6. Step 6: Final answer
   x = 109,403.97