Finding the Fourth Proportional to 58,648.28, 80,934.71 and 31,790.76

Step by Step Solution

1. Step 1: Write the proportion equation
   58,648.28 : 80,934.71 = 31,790.76 : x
2. Step 2: Convert to fraction form
   58,648.28/80,934.71 = 31,790.76/x
3. Step 3: Cross multiply
   58,648.28x = 80,934.71 × 31,790.76
4. Step 4: Simplify right side
   58,648.28x = 2,572,975,782.33
5. Step 5: Solve for x
   x = 2,572,975,782.33/58,648.28
6. Step 6: Final answer
   x = 43,871.30