Finding the Fourth Proportional to 61,061.43, 91,605.30 and 18,940.67

Step by Step Solution

1. Step 1: Write the proportion equation
   61,061.43 : 91,605.30 = 18,940.67 : x
2. Step 2: Convert to fraction form
   61,061.43/91,605.30 = 18,940.67/x
3. Step 3: Cross multiply
   61,061.43x = 91,605.30 × 18,940.67
4. Step 4: Simplify right side
   61,061.43x = 1,735,065,757.55
5. Step 5: Solve for x
   x = 1,735,065,757.55/61,061.43
6. Step 6: Final answer
   x = 28,415.09