Finding the Fourth Proportional to 42,839.82, 64,166.15 and 17,803.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,839.82 : 64,166.15 = 17,803.97 : x
2. Step 2: Convert to fraction form
   42,839.82/64,166.15 = 17,803.97/x
3. Step 3: Cross multiply
   42,839.82x = 64,166.15 × 17,803.97
4. Step 4: Simplify right side
   42,839.82x = 1,142,411,799.76
5. Step 5: Solve for x
   x = 1,142,411,799.76/42,839.82
6. Step 6: Final answer
   x = 26,667.05