Finding the Fourth Proportional to 53,435.88, 80,140.14 and 20,146.10

Step by Step Solution

1. Step 1: Write the proportion equation
   53,435.88 : 80,140.14 = 20,146.10 : x
2. Step 2: Convert to fraction form
   53,435.88/80,140.14 = 20,146.10/x
3. Step 3: Cross multiply
   53,435.88x = 80,140.14 × 20,146.10
4. Step 4: Simplify right side
   53,435.88x = 1,614,511,274.45
5. Step 5: Solve for x
   x = 1,614,511,274.45/53,435.88
6. Step 6: Final answer
   x = 30,213.99