Finding the Fourth Proportional to 42,608.92, 58,906.60 and 31,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,608.92 : 58,906.60 = 31,980.10 : x
2. Step 2: Convert to fraction form
   42,608.92/58,906.60 = 31,980.10/x
3. Step 3: Cross multiply
   42,608.92x = 58,906.60 × 31,980.10
4. Step 4: Simplify right side
   42,608.92x = 1,883,838,958.66
5. Step 5: Solve for x
   x = 1,883,838,958.66/42,608.92
6. Step 6: Final answer
   x = 44,212.31