Finding the Fourth Proportional to 58,608.39, 80,986.86 and 42,665.16

Step by Step Solution

1. Step 1: Write the proportion equation
   58,608.39 : 80,986.86 = 42,665.16 : x
2. Step 2: Convert to fraction form
   58,608.39/80,986.86 = 42,665.16/x
3. Step 3: Cross multiply
   58,608.39x = 80,986.86 × 42,665.16
4. Step 4: Simplify right side
   58,608.39x = 3,455,317,339.80
5. Step 5: Solve for x
   x = 3,455,317,339.80/58,608.39
6. Step 6: Final answer
   x = 58,956.02