Finding the Fourth Proportional to 198,111.80, 296,642.82 and 104,420.72

Step by Step Solution

1. Step 1: Write the proportion equation
   198,111.80 : 296,642.82 = 104,420.72 : x
2. Step 2: Convert to fraction form
   198,111.80/296,642.82 = 104,420.72/x
3. Step 3: Cross multiply
   198,111.80x = 296,642.82 × 104,420.72
4. Step 4: Simplify right side
   198,111.80x = 30,975,656,847.23
5. Step 5: Solve for x
   x = 30,975,656,847.23/198,111.80
6. Step 6: Final answer
   x = 156,354.43