Finding the Fourth Proportional to 55,429.56, 83,122.78 and 17,980.58

Step by Step Solution

1. Step 1: Write the proportion equation
   55,429.56 : 83,122.78 = 17,980.58 : x
2. Step 2: Convert to fraction form
   55,429.56/83,122.78 = 17,980.58/x
3. Step 3: Cross multiply
   55,429.56x = 83,122.78 × 17,980.58
4. Step 4: Simplify right side
   55,429.56x = 1,494,595,795.61
5. Step 5: Solve for x
   x = 1,494,595,795.61/55,429.56
6. Step 6: Final answer
   x = 26,963.88