Finding the Fourth Proportional to 55,407.71, 83,111.56 and 13,854.71

Step by Step Solution

1. Step 1: Write the proportion equation
   55,407.71 : 83,111.56 = 13,854.71 : x
2. Step 2: Convert to fraction form
   55,407.71/83,111.56 = 13,854.71/x
3. Step 3: Cross multiply
   55,407.71x = 83,111.56 × 13,854.71
4. Step 4: Simplify right side
   55,407.71x = 1,151,486,561.45
5. Step 5: Solve for x
   x = 1,151,486,561.45/55,407.71
6. Step 6: Final answer
   x = 20,782.06