Finding the Fourth Proportional to 42,109.30, 58,114.92 and 31,480.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109.30 : 58,114.92 = 31,480.48 : x
2. Step 2: Convert to fraction form
   42,109.30/58,114.92 = 31,480.48/x
3. Step 3: Cross multiply
   42,109.30x = 58,114.92 × 31,480.48
4. Step 4: Simplify right side
   42,109.30x = 1,829,485,576.76
5. Step 5: Solve for x
   x = 1,829,485,576.76/42,109.30
6. Step 6: Final answer
   x = 43,446.12