Finding the Fourth Proportional to 55,131.84, 82,675.49 and 21,380.09

Step by Step Solution

1. Step 1: Write the proportion equation
   55,131.84 : 82,675.49 = 21,380.09 : x
2. Step 2: Convert to fraction form
   55,131.84/82,675.49 = 21,380.09/x
3. Step 3: Cross multiply
   55,131.84x = 82,675.49 × 21,380.09
4. Step 4: Simplify right side
   55,131.84x = 1,767,609,263.76
5. Step 5: Solve for x
   x = 1,767,609,263.76/55,131.84
6. Step 6: Final answer
   x = 32,061.49