Finding the Fourth Proportional to 53,144.18, 79,713.03 and 21,978.62

Step by Step Solution

1. Step 1: Write the proportion equation
   53,144.18 : 79,713.03 = 21,978.62 : x
2. Step 2: Convert to fraction form
   53,144.18/79,713.03 = 21,978.62/x
3. Step 3: Cross multiply
   53,144.18x = 79,713.03 × 21,978.62
4. Step 4: Simplify right side
   53,144.18x = 1,751,982,395.42
5. Step 5: Solve for x
   x = 1,751,982,395.42/53,144.18
6. Step 6: Final answer
   x = 32,966.59