Finding the Fourth Proportional to 105,042.52, 157,539.79 and 30,162.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,042.52 : 157,539.79 = 30,162.07 : x
2. Step 2: Convert to fraction form
   105,042.52/157,539.79 = 30,162.07/x
3. Step 3: Cross multiply
   105,042.52x = 157,539.79 × 30,162.07
4. Step 4: Simplify right side
   105,042.52x = 4,751,726,238.73
5. Step 5: Solve for x
   x = 4,751,726,238.73/105,042.52
6. Step 6: Final answer
   x = 45,236.22