Finding the Fourth Proportional to 46,345.05, 64,008.72 and 31,211.42

Step by Step Solution

1. Step 1: Write the proportion equation
   46,345.05 : 64,008.72 = 31,211.42 : x
2. Step 2: Convert to fraction form
   46,345.05/64,008.72 = 31,211.42/x
3. Step 3: Cross multiply
   46,345.05x = 64,008.72 × 31,211.42
4. Step 4: Simplify right side
   46,345.05x = 1,997,802,723.54
5. Step 5: Solve for x
   x = 1,997,802,723.54/46,345.05
6. Step 6: Final answer
   x = 43,107.14