Finding the Fourth Proportional to 42,776.04, 64,105.74 and 26,141.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,776.04 : 64,105.74 = 26,141.88 : x
2. Step 2: Convert to fraction form
   42,776.04/64,105.74 = 26,141.88/x
3. Step 3: Cross multiply
   42,776.04x = 64,105.74 × 26,141.88
4. Step 4: Simplify right side
   42,776.04x = 1,675,844,562.39
5. Step 5: Solve for x
   x = 1,675,844,562.39/42,776.04
6. Step 6: Final answer
   x = 39,177.18