Finding the Fourth Proportional to 42,839.75, 64,282.88 and 17,881.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,839.75 : 64,282.88 = 17,881.98 : x
2. Step 2: Convert to fraction form
   42,839.75/64,282.88 = 17,881.98/x
3. Step 3: Cross multiply
   42,839.75x = 64,282.88 × 17,881.98
4. Step 4: Simplify right side
   42,839.75x = 1,149,505,339.74
5. Step 5: Solve for x
   x = 1,149,505,339.74/42,839.75
6. Step 6: Final answer
   x = 26,832.68