Finding the Fourth Proportional to 191,770.73, 287,456.52 and 107,407.20

Step by Step Solution

1. Step 1: Write the proportion equation
   191,770.73 : 287,456.52 = 107,407.20 : x
2. Step 2: Convert to fraction form
   191,770.73/287,456.52 = 107,407.20/x
3. Step 3: Cross multiply
   191,770.73x = 287,456.52 × 107,407.20
4. Step 4: Simplify right side
   191,770.73x = 30,874,899,934.94
5. Step 5: Solve for x
   x = 30,874,899,934.94/191,770.73
6. Step 6: Final answer
   x = 160,999.03