Finding the Fourth Proportional to 114,830.72, 172,226.64 and 31,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   114,830.72 : 172,226.64 = 31,724.72 : x
2. Step 2: Convert to fraction form
   114,830.72/172,226.64 = 31,724.72/x
3. Step 3: Cross multiply
   114,830.72x = 172,226.64 × 31,724.72
4. Step 4: Simplify right side
   114,830.72x = 5,463,841,930.54
5. Step 5: Solve for x
   x = 5,463,841,930.54/114,830.72
6. Step 6: Final answer
   x = 47,581.71