Finding the Fourth Proportional to 42,102.30, 58,105.26 and 31,473.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,102.30 : 58,105.26 = 31,473.48 : x
2. Step 2: Convert to fraction form
   42,102.30/58,105.26 = 31,473.48/x
3. Step 3: Cross multiply
   42,102.30x = 58,105.26 × 31,473.48
4. Step 4: Simplify right side
   42,102.30x = 1,828,774,738.50
5. Step 5: Solve for x
   x = 1,828,774,738.50/42,102.30
6. Step 6: Final answer
   x = 43,436.46