Finding the Fourth Proportional to 42,940.20, 64,416.15 and 14,852.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,940.20 : 64,416.15 = 14,852.72 : x
2. Step 2: Convert to fraction form
   42,940.20/64,416.15 = 14,852.72/x
3. Step 3: Cross multiply
   42,940.20x = 64,416.15 × 14,852.72
4. Step 4: Simplify right side
   42,940.20x = 956,755,039.43
5. Step 5: Solve for x
   x = 956,755,039.43/42,940.20
6. Step 6: Final answer
   x = 22,281.10