Finding the Fourth Proportional to 55,259.81, 76,258.55 and 30,109.31

Step by Step Solution

1. Step 1: Write the proportion equation
   55,259.81 : 76,258.55 = 30,109.31 : x
2. Step 2: Convert to fraction form
   55,259.81/76,258.55 = 30,109.31/x
3. Step 3: Cross multiply
   55,259.81x = 76,258.55 × 30,109.31
4. Step 4: Simplify right side
   55,259.81x = 2,296,092,588.02
5. Step 5: Solve for x
   x = 2,296,092,588.02/55,259.81
6. Step 6: Final answer
   x = 41,550.86