Finding the Fourth Proportional to 58,648.88, 80,935.16 and 31,791.28

Step by Step Solution

1. Step 1: Write the proportion equation
   58,648.88 : 80,935.16 = 31,791.28 : x
2. Step 2: Convert to fraction form
   58,648.88/80,935.16 = 31,791.28/x
3. Step 3: Cross multiply
   58,648.88x = 80,935.16 × 31,791.28
4. Step 4: Simplify right side
   58,648.88x = 2,573,032,333.40
5. Step 5: Solve for x
   x = 2,573,032,333.40/58,648.88
6. Step 6: Final answer
   x = 43,871.81