Finding the Fourth Proportional to 25,456,080.16, 35,129,481.60 and 13,853,782.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,456,080.16 : 35,129,481.60 = 13,853,782.72 : x
2. Step 2: Convert to fraction form
   25,456,080.16/35,129,481.60 = 13,853,782.72/x
3. Step 3: Cross multiply
   25,456,080.16x = 35,129,481.60 × 13,853,782.72
4. Step 4: Simplify right side
   25,456,080.16x = 486,676,205,152,638
5. Step 5: Solve for x
   x = 486,676,205,152,638/25,456,080.16
6. Step 6: Final answer
   x = 19,118,269.67