Finding the Fourth Proportional to 309,013,105.72, 463,447,749.42 and 115,015,883.08

Step by Step Solution

1. Step 1: Write the proportion equation
   309,013,105.72 : 463,447,749.42 = 115,015,883.08 : x
2. Step 2: Convert to fraction form
   309,013,105.72/463,447,749.42 = 115,015,883.08/x
3. Step 3: Cross multiply
   309,013,105.72x = 463,447,749.42 × 115,015,883.08
4. Step 4: Simplify right side
   309,013,105.72x = 53,303,852,160,979,856
5. Step 5: Solve for x
   x = 53,303,852,160,979,856/309,013,105.72
6. Step 6: Final answer
   x = 172,497,059.75