Finding the Fourth Proportional to 42,099.30, 58,101.12 and 31,470.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,099.30 : 58,101.12 = 31,470.48 : x
2. Step 2: Convert to fraction form
   42,099.30/58,101.12 = 31,470.48/x
3. Step 3: Cross multiply
   42,099.30x = 58,101.12 × 31,470.48
4. Step 4: Simplify right side
   42,099.30x = 1,828,470,134.94
5. Step 5: Solve for x
   x = 1,828,470,134.94/42,099.30
6. Step 6: Final answer
   x = 43,432.32