Finding the Fourth Proportional to 72,342.74, 99,837.73 and 40,513.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,342.74 : 99,837.73 = 40,513.69 : x
2. Step 2: Convert to fraction form
   72,342.74/99,837.73 = 40,513.69/x
3. Step 3: Cross multiply
   72,342.74x = 99,837.73 × 40,513.69
4. Step 4: Simplify right side
   72,342.74x = 4,044,794,843.52
5. Step 5: Solve for x
   x = 4,044,794,843.52/72,342.74
6. Step 6: Final answer
   x = 55,911.55