Finding the Fourth Proportional to 1,025,196,987.87, 1,414,771,890.57 and 555,298,308.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025,196,987.87 : 1,414,771,890.57 = 555,298,308.09 : x
2. Step 2: Convert to fraction form
   1,025,196,987.87/1,414,771,890.57 = 555,298,308.09/x
3. Step 3: Cross multiply
   1,025,196,987.87x = 1,414,771,890.57 × 555,298,308.09
4. Step 4: Simplify right side
   1,025,196,987.87x = 785,620,437,166,811,648
5. Step 5: Solve for x
   x = 785,620,437,166,811,648/1,025,196,987.87
6. Step 6: Final answer
   x = 766,311,690.79