Finding the Fourth Proportional to 42,802.01, 64,168.23 and 17,860.66

Step by Step Solution

1. Step 1: Write the proportion equation
   42,802.01 : 64,168.23 = 17,860.66 : x
2. Step 2: Convert to fraction form
   42,802.01/64,168.23 = 17,860.66/x
3. Step 3: Cross multiply
   42,802.01x = 64,168.23 × 17,860.66
4. Step 4: Simplify right side
   42,802.01x = 1,146,086,938.83
5. Step 5: Solve for x
   x = 1,146,086,938.83/42,802.01
6. Step 6: Final answer
   x = 26,776.47