Finding the Fourth Proportional to 66,682.74, 91,978.83 and 42,771.54

Step by Step Solution

1. Step 1: Write the proportion equation
   66,682.74 : 91,978.83 = 42,771.54 : x
2. Step 2: Convert to fraction form
   66,682.74/91,978.83 = 42,771.54/x
3. Step 3: Cross multiply
   66,682.74x = 91,978.83 × 42,771.54
4. Step 4: Simplify right side
   66,682.74x = 3,934,076,206.50
5. Step 5: Solve for x
   x = 3,934,076,206.50/66,682.74
6. Step 6: Final answer
   x = 58,996.92