Finding the Fourth Proportional to 42,921.86, 64,401.29 and 23,214.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,921.86 : 64,401.29 = 23,214.29 : x
2. Step 2: Convert to fraction form
   42,921.86/64,401.29 = 23,214.29/x
3. Step 3: Cross multiply
   42,921.86x = 64,401.29 × 23,214.29
4. Step 4: Simplify right side
   42,921.86x = 1,495,030,106.36
5. Step 5: Solve for x
   x = 1,495,030,106.36/42,921.86
6. Step 6: Final answer
   x = 34,831.44