Finding the Fourth Proportional to 144,642,456.32, 199,608,054.72 and 78,564,245

Step by Step Solution

1. Step 1: Write the proportion equation
   144,642,456.32 : 199,608,054.72 = 78,564,245 : x
2. Step 2: Convert to fraction form
   144,642,456.32/199,608,054.72 = 78,564,245/x
3. Step 3: Cross multiply
   144,642,456.32x = 199,608,054.72 × 78,564,245
4. Step 4: Simplify right side
   144,642,456.32x = 15,682,056,114,995,486
5. Step 5: Solve for x
   x = 15,682,056,114,995,486/144,642,456.32
6. Step 6: Final answer
   x = 108,419,453.83