Finding the Fourth Proportional to 105,022.05, 157,485.69 and 30,125.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,022.05 : 157,485.69 = 30,125.20 : x
2. Step 2: Convert to fraction form
   105,022.05/157,485.69 = 30,125.20/x
3. Step 3: Cross multiply
   105,022.05x = 157,485.69 × 30,125.20
4. Step 4: Simplify right side
   105,022.05x = 4,744,287,908.39
5. Step 5: Solve for x
   x = 4,744,287,908.39/105,022.05
6. Step 6: Final answer
   x = 45,174.21