Finding the Fourth Proportional to 42,779.94, 64,180.82 and 17,811.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,779.94 : 64,180.82 = 17,811.68 : x
2. Step 2: Convert to fraction form
   42,779.94/64,180.82 = 17,811.68/x
3. Step 3: Cross multiply
   42,779.94x = 64,180.82 × 17,811.68
4. Step 4: Simplify right side
   42,779.94x = 1,143,168,227.98
5. Step 5: Solve for x
   x = 1,143,168,227.98/42,779.94
6. Step 6: Final answer
   x = 26,722.06