Finding the Fourth Proportional to 42,866.55, 64,272.45 and 17,923.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,866.55 : 64,272.45 = 17,923.80 : x
2. Step 2: Convert to fraction form
   42,866.55/64,272.45 = 17,923.80/x
3. Step 3: Cross multiply
   42,866.55x = 64,272.45 × 17,923.80
4. Step 4: Simplify right side
   42,866.55x = 1,152,006,539.31
5. Step 5: Solve for x
   x = 1,152,006,539.31/42,866.55
6. Step 6: Final answer
   x = 26,874.25