Finding the Fourth Proportional to 67,200.09, 92,697.55 and 42,005.85

Step by Step Solution

1. Step 1: Write the proportion equation
   67,200.09 : 92,697.55 = 42,005.85 : x
2. Step 2: Convert to fraction form
   67,200.09/92,697.55 = 42,005.85/x
3. Step 3: Cross multiply
   67,200.09x = 92,697.55 × 42,005.85
4. Step 4: Simplify right side
   67,200.09x = 3,893,839,380.67
5. Step 5: Solve for x
   x = 3,893,839,380.67/67,200.09
6. Step 6: Final answer
   x = 57,943.96