Finding the Fourth Proportional to 55,261.81, 76,261.31 and 30,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   55,261.81 : 76,261.31 = 30,111.31 : x
2. Step 2: Convert to fraction form
   55,261.81/76,261.31 = 30,111.31/x
3. Step 3: Cross multiply
   55,261.81x = 76,261.31 × 30,111.31
4. Step 4: Simplify right side
   55,261.81x = 2,296,327,946.42
5. Step 5: Solve for x
   x = 2,296,327,946.42/55,261.81
6. Step 6: Final answer
   x = 41,553.61