Finding the Fourth Proportional to 55,291.95, 76,305.56 and 31,100.49

Step by Step Solution

1. Step 1: Write the proportion equation
   55,291.95 : 76,305.56 = 31,100.49 : x
2. Step 2: Convert to fraction form
   55,291.95/76,305.56 = 31,100.49/x
3. Step 3: Cross multiply
   55,291.95x = 76,305.56 × 31,100.49
4. Step 4: Simplify right side
   55,291.95x = 2,373,140,150.22
5. Step 5: Solve for x
   x = 2,373,140,150.22/55,291.95
6. Step 6: Final answer
   x = 42,920.17