Finding the Fourth Proportional to 42,770.35, 64,166.47 and 17,802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,770.35 : 64,166.47 = 17,802.10 : x
2. Step 2: Convert to fraction form
   42,770.35/64,166.47 = 17,802.10/x
3. Step 3: Cross multiply
   42,770.35x = 64,166.47 × 17,802.10
4. Step 4: Simplify right side
   42,770.35x = 1,142,297,915.59
5. Step 5: Solve for x
   x = 1,142,297,915.59/42,770.35
6. Step 6: Final answer
   x = 26,707.71