Finding the Fourth Proportional to 199,061.35, 298,590.17 and 80,704.55

Step by Step Solution

1. Step 1: Write the proportion equation
   199,061.35 : 298,590.17 = 80,704.55 : x
2. Step 2: Convert to fraction form
   199,061.35/298,590.17 = 80,704.55/x
3. Step 3: Cross multiply
   199,061.35x = 298,590.17 × 80,704.55
4. Step 4: Simplify right side
   199,061.35x = 24,097,585,102.51
5. Step 5: Solve for x
   x = 24,097,585,102.51/199,061.35
6. Step 6: Final answer
   x = 121,056.07