Finding the Fourth Proportional to 53,196.48, 79,805.52 and 19,915.74

Step by Step Solution

1. Step 1: Write the proportion equation
   53,196.48 : 79,805.52 = 19,915.74 : x
2. Step 2: Convert to fraction form
   53,196.48/79,805.52 = 19,915.74/x
3. Step 3: Cross multiply
   53,196.48x = 79,805.52 × 19,915.74
4. Step 4: Simplify right side
   53,196.48x = 1,589,385,986.88
5. Step 5: Solve for x
   x = 1,589,385,986.88/53,196.48
6. Step 6: Final answer
   x = 29,877.65