Finding the Fourth Proportional to 46,620.72, 64,341.21 and 28,470.42

Step by Step Solution

1. Step 1: Write the proportion equation
   46,620.72 : 64,341.21 = 28,470.42 : x
2. Step 2: Convert to fraction form
   46,620.72/64,341.21 = 28,470.42/x
3. Step 3: Cross multiply
   46,620.72x = 64,341.21 × 28,470.42
4. Step 4: Simplify right side
   46,620.72x = 1,831,821,272.01
5. Step 5: Solve for x
   x = 1,831,821,272.01/46,620.72
6. Step 6: Final answer
   x = 39,292.00