Finding the Fourth Proportional to 42,896.67, 64,323.06 and 17,929.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,896.67 : 64,323.06 = 17,929.91 : x
2. Step 2: Convert to fraction form
   42,896.67/64,323.06 = 17,929.91/x
3. Step 3: Cross multiply
   42,896.67x = 64,323.06 × 17,929.91
4. Step 4: Simplify right side
   42,896.67x = 1,153,306,422.35
5. Step 5: Solve for x
   x = 1,153,306,422.35/42,896.67
6. Step 6: Final answer
   x = 26,885.69