Finding the Fourth Proportional to 55,081.83, 76,017.30 and 31,214.37

Step by Step Solution

1. Step 1: Write the proportion equation
   55,081.83 : 76,017.30 = 31,214.37 : x
2. Step 2: Convert to fraction form
   55,081.83/76,017.30 = 31,214.37/x
3. Step 3: Cross multiply
   55,081.83x = 76,017.30 × 31,214.37
4. Step 4: Simplify right side
   55,081.83x = 2,372,832,128.60
5. Step 5: Solve for x
   x = 2,372,832,128.60/55,081.83
6. Step 6: Final answer
   x = 43,078.31