Finding the Fourth Proportional to 54,686.58, 82,036.71 and 21,402.34

Step by Step Solution

1. Step 1: Write the proportion equation
   54,686.58 : 82,036.71 = 21,402.34 : x
2. Step 2: Convert to fraction form
   54,686.58/82,036.71 = 21,402.34/x
3. Step 3: Cross multiply
   54,686.58x = 82,036.71 × 21,402.34
4. Step 4: Simplify right side
   54,686.58x = 1,755,777,559.90
5. Step 5: Solve for x
   x = 1,755,777,559.90/54,686.58
6. Step 6: Final answer
   x = 32,106.19