Finding the Fourth Proportional to 58,077.51, 80,171.43 and 39,240.15

Step by Step Solution

1. Step 1: Write the proportion equation
   58,077.51 : 80,171.43 = 39,240.15 : x
2. Step 2: Convert to fraction form
   58,077.51/80,171.43 = 39,240.15/x
3. Step 3: Cross multiply
   58,077.51x = 80,171.43 × 39,240.15
4. Step 4: Simplify right side
   58,077.51x = 3,145,938,938.91
5. Step 5: Solve for x
   x = 3,145,938,938.91/58,077.51
6. Step 6: Final answer
   x = 54,167.94