Finding the Fourth Proportional to 67,363.18, 100,978.71 and 57,390.46

Step by Step Solution

1. Step 1: Write the proportion equation
   67,363.18 : 100,978.71 = 57,390.46 : x
2. Step 2: Convert to fraction form
   67,363.18/100,978.71 = 57,390.46/x
3. Step 3: Cross multiply
   67,363.18x = 100,978.71 × 57,390.46
4. Step 4: Simplify right side
   67,363.18x = 5,795,214,617.11
5. Step 5: Solve for x
   x = 5,795,214,617.11/67,363.18
6. Step 6: Final answer
   x = 86,029.41