Finding the Fourth Proportional to 111,474, 153,834.12 and 61,173

Step by Step Solution

1. Step 1: Write the proportion equation
   111,474 : 153,834.12 = 61,173 : x
2. Step 2: Convert to fraction form
   111,474/153,834.12 = 61,173/x
3. Step 3: Cross multiply
   111,474x = 153,834.12 × 61,173
4. Step 4: Simplify right side
   111,474x = 9,410,494,622.76
5. Step 5: Solve for x
   x = 9,410,494,622.76/111,474
6. Step 6: Final answer
   x = 84,418.74