Finding the Fourth Proportional to 42,320,339.66, 63,481,297.12 and 12,028,989.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,320,339.66 : 63,481,297.12 = 12,028,989.98 : x
2. Step 2: Convert to fraction form
   42,320,339.66/63,481,297.12 = 12,028,989.98/x
3. Step 3: Cross multiply
   42,320,339.66x = 63,481,297.12 × 12,028,989.98
4. Step 4: Simplify right side
   42,320,339.66x = 763,615,886,973,882.88
5. Step 5: Solve for x
   x = 763,615,886,973,882.88/42,320,339.66
6. Step 6: Final answer
   x = 18,043,708.84