Finding the Fourth Proportional to 57,119.98, 78,822.72 and 31,277.86

Step by Step Solution

1. Step 1: Write the proportion equation
   57,119.98 : 78,822.72 = 31,277.86 : x
2. Step 2: Convert to fraction form
   57,119.98/78,822.72 = 31,277.86/x
3. Step 3: Cross multiply
   57,119.98x = 78,822.72 × 31,277.86
4. Step 4: Simplify right side
   57,119.98x = 2,465,406,000.98
5. Step 5: Solve for x
   x = 2,465,406,000.98/57,119.98
6. Step 6: Final answer
   x = 43,161.88