Finding the Fourth Proportional to 120,816,086.10, 181,224,129.15 and 120,816,086.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,816,086.10 : 181,224,129.15 = 120,816,086.10 : x
2. Step 2: Convert to fraction form
   120,816,086.10/181,224,129.15 = 120,816,086.10/x
3. Step 3: Cross multiply
   120,816,086.10x = 181,224,129.15 × 120,816,086.10
4. Step 4: Simplify right side
   120,816,086.10x = 21,894,789,990,783,920
5. Step 5: Solve for x
   x = 21,894,789,990,783,920/120,816,086.10
6. Step 6: Final answer
   x = 181,224,129.15