Finding the Fourth Proportional to 457,910.69, 686,898.83 and 120,947.98

Step by Step Solution

1. Step 1: Write the proportion equation
   457,910.69 : 686,898.83 = 120,947.98 : x
2. Step 2: Convert to fraction form
   457,910.69/686,898.83 = 120,947.98/x
3. Step 3: Cross multiply
   457,910.69x = 686,898.83 × 120,947.98
4. Step 4: Simplify right side
   457,910.69x = 83,079,025,348.12
5. Step 5: Solve for x
   x = 83,079,025,348.12/457,910.69
6. Step 6: Final answer
   x = 181,430.63