Finding the Fourth Proportional to 42,048.42, 58,030.88 and 31,419.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,048.42 : 58,030.88 = 31,419.60 : x
2. Step 2: Convert to fraction form
   42,048.42/58,030.88 = 31,419.60/x
3. Step 3: Cross multiply
   42,048.42x = 58,030.88 × 31,419.60
4. Step 4: Simplify right side
   42,048.42x = 1,823,306,880.15
5. Step 5: Solve for x
   x = 1,823,306,880.15/42,048.42
6. Step 6: Final answer
   x = 43,362.08