Finding the Fourth Proportional to 81,189,669.03, 111,933,351.52 and 64,499,786.29

Step by Step Solution

1. Step 1: Write the proportion equation
   81,189,669.03 : 111,933,351.52 = 64,499,786.29 : x
2. Step 2: Convert to fraction form
   81,189,669.03/111,933,351.52 = 64,499,786.29/x
3. Step 3: Cross multiply
   81,189,669.03x = 111,933,351.52 × 64,499,786.29
4. Step 4: Simplify right side
   81,189,669.03x = 7,219,677,251,763,446
5. Step 5: Solve for x
   x = 7,219,677,251,763,446/81,189,669.03
6. Step 6: Final answer
   x = 88,923,595.06