Finding the Fourth Proportional to 111,743,056.17, 168,664,217.63 and 111,743,056.17

Step by Step Solution

1. Step 1: Write the proportion equation
   111,743,056.17 : 168,664,217.63 = 111,743,056.17 : x
2. Step 2: Convert to fraction form
   111,743,056.17/168,664,217.63 = 111,743,056.17/x
3. Step 3: Cross multiply
   111,743,056.17x = 168,664,217.63 × 111,743,056.17
4. Step 4: Simplify right side
   111,743,056.17x = 18,847,055,143,939,480
5. Step 5: Solve for x
   x = 18,847,055,143,939,480/111,743,056.17
6. Step 6: Final answer
   x = 168,664,217.63