Finding the Fourth Proportional to 58,239.91, 80,259.89 and 50,171.03

Step by Step Solution

1. Step 1: Write the proportion equation
   58,239.91 : 80,259.89 = 50,171.03 : x
2. Step 2: Convert to fraction form
   58,239.91/80,259.89 = 50,171.03/x
3. Step 3: Cross multiply
   58,239.91x = 80,259.89 × 50,171.03
4. Step 4: Simplify right side
   58,239.91x = 4,026,720,696.83
5. Step 5: Solve for x
   x = 4,026,720,696.83/58,239.91
6. Step 6: Final answer
   x = 69,140.23