Finding the Fourth Proportional to 67,178.30, 100,785.87 and 53,184.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67,178.30 : 100,785.87 = 53,184.94 : x
2. Step 2: Convert to fraction form
   67,178.30/100,785.87 = 53,184.94/x
3. Step 3: Cross multiply
   67,178.30x = 100,785.87 × 53,184.94
4. Step 4: Simplify right side
   67,178.30x = 5,360,290,196.83
5. Step 5: Solve for x
   x = 5,360,290,196.83/67,178.30
6. Step 6: Final answer
   x = 79,792.00