Finding the Fourth Proportional to 55,289.67, 76,300.83 and 30,139.17

Step by Step Solution

1. Step 1: Write the proportion equation
   55,289.67 : 76,300.83 = 30,139.17 : x
2. Step 2: Convert to fraction form
   55,289.67/76,300.83 = 30,139.17/x
3. Step 3: Cross multiply
   55,289.67x = 76,300.83 × 30,139.17
4. Step 4: Simplify right side
   55,289.67x = 2,299,643,686.51
5. Step 5: Solve for x
   x = 2,299,643,686.51/55,289.67
6. Step 6: Final answer
   x = 41,592.65