Finding the Fourth Proportional to 120,813.86, 181,196.15 and 45,907.71

Step by Step Solution

1. Step 1: Write the proportion equation
   120,813.86 : 181,196.15 = 45,907.71 : x
2. Step 2: Convert to fraction form
   120,813.86/181,196.15 = 45,907.71/x
3. Step 3: Cross multiply
   120,813.86x = 181,196.15 × 45,907.71
4. Step 4: Simplify right side
   120,813.86x = 8,318,300,077.78
5. Step 5: Solve for x
   x = 8,318,300,077.78/120,813.86
6. Step 6: Final answer
   x = 68,852.20