Finding the Fourth Proportional to 53,522.28, 80,286.89 and 17,980.79

Step by Step Solution

1. Step 1: Write the proportion equation
   53,522.28 : 80,286.89 = 17,980.79 : x
2. Step 2: Convert to fraction form
   53,522.28/80,286.89 = 17,980.79/x
3. Step 3: Cross multiply
   53,522.28x = 80,286.89 × 17,980.79
4. Step 4: Simplify right side
   53,522.28x = 1,443,621,217.50
5. Step 5: Solve for x
   x = 1,443,621,217.50/53,522.28
6. Step 6: Final answer
   x = 26,972.34