Finding the Fourth Proportional to 55,691.06, 76,853.54 and 30,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,691.06 : 76,853.54 = 30,540.50 : x
2. Step 2: Convert to fraction form
   55,691.06/76,853.54 = 30,540.50/x
3. Step 3: Cross multiply
   55,691.06x = 76,853.54 × 30,540.50
4. Step 4: Simplify right side
   55,691.06x = 2,347,145,538.37
5. Step 5: Solve for x
   x = 2,347,145,538.37/55,691.06
6. Step 6: Final answer
   x = 42,145.82