Finding the Fourth Proportional to 72,127.69, 99,534.38 and 40,296.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,127.69 : 99,534.38 = 40,296.83 : x
2. Step 2: Convert to fraction form
   72,127.69/99,534.38 = 40,296.83/x
3. Step 3: Cross multiply
   72,127.69x = 99,534.38 × 40,296.83
4. Step 4: Simplify right side
   72,127.69x = 4,010,919,290.86
5. Step 5: Solve for x
   x = 4,010,919,290.86/72,127.69
6. Step 6: Final answer
   x = 55,608.59