Finding the Fourth Proportional to 72,264.48, 108,385.76 and 19,678.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,264.48 : 108,385.76 = 19,678.10 : x
2. Step 2: Convert to fraction form
   72,264.48/108,385.76 = 19,678.10/x
3. Step 3: Cross multiply
   72,264.48x = 108,385.76 × 19,678.10
4. Step 4: Simplify right side
   72,264.48x = 2,132,825,823.86
5. Step 5: Solve for x
   x = 2,132,825,823.86/72,264.48
6. Step 6: Final answer
   x = 29,514.17