Finding the Fourth Proportional to 53,329.42, 79,996.56 and 13,890.52

Step by Step Solution

1. Step 1: Write the proportion equation
   53,329.42 : 79,996.56 = 13,890.52 : x
2. Step 2: Convert to fraction form
   53,329.42/79,996.56 = 13,890.52/x
3. Step 3: Cross multiply
   53,329.42x = 79,996.56 × 13,890.52
4. Step 4: Simplify right side
   53,329.42x = 1,111,193,816.61
5. Step 5: Solve for x
   x = 1,111,193,816.61/53,329.42
6. Step 6: Final answer
   x = 20,836.41