Finding the Fourth Proportional to 620,196.19, 929,703.78 and 199,176.82

Step by Step Solution

1. Step 1: Write the proportion equation
   620,196.19 : 929,703.78 = 199,176.82 : x
2. Step 2: Convert to fraction form
   620,196.19/929,703.78 = 199,176.82/x
3. Step 3: Cross multiply
   620,196.19x = 929,703.78 × 199,176.82
4. Step 4: Simplify right side
   620,196.19x = 185,175,442,442.38
5. Step 5: Solve for x
   x = 185,175,442,442.38/620,196.19
6. Step 6: Final answer
   x = 298,575.59