Finding the Fourth Proportional to 46,479.10, 64,105.34 and 31,347.78

Step by Step Solution

1. Step 1: Write the proportion equation
   46,479.10 : 64,105.34 = 31,347.78 : x
2. Step 2: Convert to fraction form
   46,479.10/64,105.34 = 31,347.78/x
3. Step 3: Cross multiply
   46,479.10x = 64,105.34 × 31,347.78
4. Step 4: Simplify right side
   46,479.10x = 2,009,560,095.15
5. Step 5: Solve for x
   x = 2,009,560,095.15/46,479.10
6. Step 6: Final answer
   x = 43,235.78