Finding the Fourth Proportional to 53,145.72, 79,696.98 and 19,403.82

Step by Step Solution

1. Step 1: Write the proportion equation
   53,145.72 : 79,696.98 = 19,403.82 : x
2. Step 2: Convert to fraction form
   53,145.72/79,696.98 = 19,403.82/x
3. Step 3: Cross multiply
   53,145.72x = 79,696.98 × 19,403.82
4. Step 4: Simplify right side
   53,145.72x = 1,546,425,854.46
5. Step 5: Solve for x
   x = 1,546,425,854.46/53,145.72
6. Step 6: Final answer
   x = 29,097.84