Finding the Fourth Proportional to 55,131.06, 76,082.56 and 31,258.74

Step by Step Solution

1. Step 1: Write the proportion equation
   55,131.06 : 76,082.56 = 31,258.74 : x
2. Step 2: Convert to fraction form
   55,131.06/76,082.56 = 31,258.74/x
3. Step 3: Cross multiply
   55,131.06x = 76,082.56 × 31,258.74
4. Step 4: Simplify right side
   55,131.06x = 2,378,244,961.57
5. Step 5: Solve for x
   x = 2,378,244,961.57/55,131.06
6. Step 6: Final answer
   x = 43,138.02