Finding the Fourth Proportional to 120,873, 181,179.90 and 58,405.80

Step by Step Solution

1. Step 1: Write the proportion equation
   120,873 : 181,179.90 = 58,405.80 : x
2. Step 2: Convert to fraction form
   120,873/181,179.90 = 58,405.80/x
3. Step 3: Cross multiply
   120,873x = 181,179.90 × 58,405.80
4. Step 4: Simplify right side
   120,873x = 10,581,957,003.42
5. Step 5: Solve for x
   x = 10,581,957,003.42/120,873
6. Step 6: Final answer
   x = 87,546.08