Finding the Fourth Proportional to 72,345.35, 99,836.15 and 40,514.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,345.35 : 99,836.15 = 40,514.18 : x
2. Step 2: Convert to fraction form
   72,345.35/99,836.15 = 40,514.18/x
3. Step 3: Cross multiply
   72,345.35x = 99,836.15 × 40,514.18
4. Step 4: Simplify right side
   72,345.35x = 4,044,779,049.86
5. Step 5: Solve for x
   x = 4,044,779,049.86/72,345.35
6. Step 6: Final answer
   x = 55,909.31