Finding the Fourth Proportional to 57,980.52, 86,845.80 and 39,157.05

Step by Step Solution

1. Step 1: Write the proportion equation
   57,980.52 : 86,845.80 = 39,157.05 : x
2. Step 2: Convert to fraction form
   57,980.52/86,845.80 = 39,157.05/x
3. Step 3: Cross multiply
   57,980.52x = 86,845.80 × 39,157.05
4. Step 4: Simplify right side
   57,980.52x = 3,400,625,332.89
5. Step 5: Solve for x
   x = 3,400,625,332.89/57,980.52
6. Step 6: Final answer
   x = 58,651.17