Finding the Fourth Proportional to 58,128.88, 80,241.96 and 39,291.52

Step by Step Solution

1. Step 1: Write the proportion equation
   58,128.88 : 80,241.96 = 39,291.52 : x
2. Step 2: Convert to fraction form
   58,128.88/80,241.96 = 39,291.52/x
3. Step 3: Cross multiply
   58,128.88x = 80,241.96 × 39,291.52
4. Step 4: Simplify right side
   58,128.88x = 3,152,828,576.18
5. Step 5: Solve for x
   x = 3,152,828,576.18/58,128.88
6. Step 6: Final answer
   x = 54,238.59