Finding the Fourth Proportional to 55,802.79, 83,705.94 and 20,271.33

Step by Step Solution

1. Step 1: Write the proportion equation
   55,802.79 : 83,705.94 = 20,271.33 : x
2. Step 2: Convert to fraction form
   55,802.79/83,705.94 = 20,271.33/x
3. Step 3: Cross multiply
   55,802.79x = 83,705.94 × 20,271.33
4. Step 4: Simplify right side
   55,802.79x = 1,696,830,732.70
5. Step 5: Solve for x
   x = 1,696,830,732.70/55,802.79
6. Step 6: Final answer
   x = 30,407.63