Finding the Fourth Proportional to 55,326.47, 76,345.40 and 31,448.48

Step by Step Solution

1. Step 1: Write the proportion equation
   55,326.47 : 76,345.40 = 31,448.48 : x
2. Step 2: Convert to fraction form
   55,326.47/76,345.40 = 31,448.48/x
3. Step 3: Cross multiply
   55,326.47x = 76,345.40 × 31,448.48
4. Step 4: Simplify right side
   55,326.47x = 2,400,946,481.89
5. Step 5: Solve for x
   x = 2,400,946,481.89/55,326.47
6. Step 6: Final answer
   x = 43,395.99