Finding the Fourth Proportional to 85,420,111,754.15, 128,040,475,081.92 and 28,740,297,033.08

Step by Step Solution

1. Step 1: Write the proportion equation
   85,420,111,754.15 : 128,040,475,081.92 = 28,740,297,033.08 : x
2. Step 2: Convert to fraction form
   85,420,111,754.15/128,040,475,081.92 = 28,740,297,033.08/x
3. Step 3: Cross multiply
   85,420,111,754.15x = 128,040,475,081.92 × 28,740,297,033.08
4. Step 4: Simplify right side
   85,420,111,754.15x = 3,679,921,286,111,058,984,960
5. Step 5: Solve for x
   x = 3,679,921,286,111,058,984,960/85,420,111,754.15
6. Step 6: Final answer
   x = 43,080,267,755.94