Finding the Fourth Proportional to 67,780.86, 101,671.98 and 17,868.12

Step by Step Solution

1. Step 1: Write the proportion equation
   67,780.86 : 101,671.98 = 17,868.12 : x
2. Step 2: Convert to fraction form
   67,780.86/101,671.98 = 17,868.12/x
3. Step 3: Cross multiply
   67,780.86x = 101,671.98 × 17,868.12
4. Step 4: Simplify right side
   67,780.86x = 1,816,687,139.28
5. Step 5: Solve for x
   x = 1,816,687,139.28/67,780.86
6. Step 6: Final answer
   x = 26,802.36