Finding the Fourth Proportional to 42,756.67, 64,100.43 and 17,815.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,756.67 : 64,100.43 = 17,815.49 : x
2. Step 2: Convert to fraction form
   42,756.67/64,100.43 = 17,815.49/x
3. Step 3: Cross multiply
   42,756.67x = 64,100.43 × 17,815.49
4. Step 4: Simplify right side
   42,756.67x = 1,141,980,569.66
5. Step 5: Solve for x
   x = 1,141,980,569.66/42,756.67
6. Step 6: Final answer
   x = 26,708.83