Finding the Fourth Proportional to 42,688.39, 58,913.99 and 31,914.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,688.39 : 58,913.99 = 31,914.60 : x
2. Step 2: Convert to fraction form
   42,688.39/58,913.99 = 31,914.60/x
3. Step 3: Cross multiply
   42,688.39x = 58,913.99 × 31,914.60
4. Step 4: Simplify right side
   42,688.39x = 1,880,216,425.25
5. Step 5: Solve for x
   x = 1,880,216,425.25/42,688.39
6. Step 6: Final answer
   x = 44,045.15