Finding the Fourth Proportional to 79,918.86, 119,931.78 and 33,171.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,918.86 : 119,931.78 = 33,171.72 : x
2. Step 2: Convert to fraction form
   79,918.86/119,931.78 = 33,171.72/x
3. Step 3: Cross multiply
   79,918.86x = 119,931.78 × 33,171.72
4. Step 4: Simplify right side
   79,918.86x = 3,978,343,425.26
5. Step 5: Solve for x
   x = 3,978,343,425.26/79,918.86
6. Step 6: Final answer
   x = 49,779.78