Finding the Fourth Proportional to 42,802.20, 64,212.05 and 14,718.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,802.20 : 64,212.05 = 14,718.60 : x
2. Step 2: Convert to fraction form
   42,802.20/64,212.05 = 14,718.60/x
3. Step 3: Cross multiply
   42,802.20x = 64,212.05 × 14,718.60
4. Step 4: Simplify right side
   42,802.20x = 945,111,696.52
5. Step 5: Solve for x
   x = 945,111,696.52/42,802.20
6. Step 6: Final answer
   x = 22,080.92