Finding the Fourth Proportional to 42,108.30, 58,113.54 and 31,479.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,108.30 : 58,113.54 = 31,479.48 : x
2. Step 2: Convert to fraction form
   42,108.30/58,113.54 = 31,479.48/x
3. Step 3: Cross multiply
   42,108.30x = 58,113.54 × 31,479.48
4. Step 4: Simplify right side
   42,108.30x = 1,829,384,020.16
5. Step 5: Solve for x
   x = 1,829,384,020.16/42,108.30
6. Step 6: Final answer
   x = 43,444.74