Finding the Fourth Proportional to 28,608,105.72, 42,908,118.30 and 9,174,806.49

Step by Step Solution

1. Step 1: Write the proportion equation
   28,608,105.72 : 42,908,118.30 = 9,174,806.49 : x
2. Step 2: Convert to fraction form
   28,608,105.72/42,908,118.30 = 9,174,806.49/x
3. Step 3: Cross multiply
   28,608,105.72x = 42,908,118.30 × 9,174,806.49
4. Step 4: Simplify right side
   28,608,105.72x = 393,673,682,037,987.12
5. Step 5: Solve for x
   x = 393,673,682,037,987.12/28,608,105.72
6. Step 6: Final answer
   x = 13,760,913.98