Finding the Fourth Proportional to 120,547.68, 166,359.96 and 72,791.52

Step by Step Solution

1. Step 1: Write the proportion equation
   120,547.68 : 166,359.96 = 72,791.52 : x
2. Step 2: Convert to fraction form
   120,547.68/166,359.96 = 72,791.52/x
3. Step 3: Cross multiply
   120,547.68x = 166,359.96 × 72,791.52
4. Step 4: Simplify right side
   120,547.68x = 12,109,594,355.54
5. Step 5: Solve for x
   x = 12,109,594,355.54/120,547.68
6. Step 6: Final answer
   x = 100,454.81