Finding the Fourth Proportional to 67,870.34, 93,665.50 and 39,191.21

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870.34 : 93,665.50 = 39,191.21 : x
2. Step 2: Convert to fraction form
   67,870.34/93,665.50 = 39,191.21/x
3. Step 3: Cross multiply
   67,870.34x = 93,665.50 × 39,191.21
4. Step 4: Simplify right side
   67,870.34x = 3,670,864,280.26
5. Step 5: Solve for x
   x = 3,670,864,280.26/67,870.34
6. Step 6: Final answer
   x = 54,086.43