Finding the Fourth Proportional to 55,422.06, 83,144.76 and 17,979.21

Step by Step Solution

1. Step 1: Write the proportion equation
   55,422.06 : 83,144.76 = 17,979.21 : x
2. Step 2: Convert to fraction form
   55,422.06/83,144.76 = 17,979.21/x
3. Step 3: Cross multiply
   55,422.06x = 83,144.76 × 17,979.21
4. Step 4: Simplify right side
   55,422.06x = 1,494,877,100.44
5. Step 5: Solve for x
   x = 1,494,877,100.44/55,422.06
6. Step 6: Final answer
   x = 26,972.60