Finding the Fourth Proportional to 105,003.02, 157,489.79 and 30,129.55

Step by Step Solution

1. Step 1: Write the proportion equation
   105,003.02 : 157,489.79 = 30,129.55 : x
2. Step 2: Convert to fraction form
   105,003.02/157,489.79 = 30,129.55/x
3. Step 3: Cross multiply
   105,003.02x = 157,489.79 × 30,129.55
4. Step 4: Simplify right side
   105,003.02x = 4,745,095,957.92
5. Step 5: Solve for x
   x = 4,745,095,957.92/105,003.02
6. Step 6: Final answer
   x = 45,190.09