Finding the Fourth Proportional to 215,320,826.20, 322,596,327.30 and 131,036,762.20

Step by Step Solution

1. Step 1: Write the proportion equation
   215,320,826.20 : 322,596,327.30 = 131,036,762.20 : x
2. Step 2: Convert to fraction form
   215,320,826.20/322,596,327.30 = 131,036,762.20/x
3. Step 3: Cross multiply
   215,320,826.20x = 322,596,327.30 × 131,036,762.20
4. Step 4: Simplify right side
   215,320,826.20x = 42,271,978,227,003,472
5. Step 5: Solve for x
   x = 42,271,978,227,003,472/215,320,826.20
6. Step 6: Final answer
   x = 196,320,899.25