Finding the Fourth Proportional to 115,047.72, 172,557.81 and 30,814.20

Step by Step Solution

1. Step 1: Write the proportion equation
   115,047.72 : 172,557.81 = 30,814.20 : x
2. Step 2: Convert to fraction form
   115,047.72/172,557.81 = 30,814.20/x
3. Step 3: Cross multiply
   115,047.72x = 172,557.81 × 30,814.20
4. Step 4: Simplify right side
   115,047.72x = 5,317,230,868.90
5. Step 5: Solve for x
   x = 5,317,230,868.90/115,047.72
6. Step 6: Final answer
   x = 46,217.61