Finding the Fourth Proportional to 42,716.72, 64,030.50 and 14,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,716.72 : 64,030.50 = 14,628.50 : x
2. Step 2: Convert to fraction form
   42,716.72/64,030.50 = 14,628.50/x
3. Step 3: Cross multiply
   42,716.72x = 64,030.50 × 14,628.50
4. Step 4: Simplify right side
   42,716.72x = 936,670,169.25
5. Step 5: Solve for x
   x = 936,670,169.25/42,716.72
6. Step 6: Final answer
   x = 21,927.48