Finding the Fourth Proportional to 85,420,111,753.52, 128,040,475,080.98 and 28,740,297,032.45

Step by Step Solution

1. Step 1: Write the proportion equation
   85,420,111,753.52 : 128,040,475,080.98 = 28,740,297,032.45 : x
2. Step 2: Convert to fraction form
   85,420,111,753.52/128,040,475,080.98 = 28,740,297,032.45/x
3. Step 3: Cross multiply
   85,420,111,753.52x = 128,040,475,080.98 × 28,740,297,032.45
4. Step 4: Simplify right side
   85,420,111,753.52x = 3,679,921,286,003,633,422,336
5. Step 5: Solve for x
   x = 3,679,921,286,003,633,422,336/85,420,111,753.52
6. Step 6: Final answer
   x = 43,080,267,755.00