Finding the Fourth Proportional to 42,109,221.02, 63,169,856.31 and 12,965,525.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109,221.02 : 63,169,856.31 = 12,965,525.51 : x
2. Step 2: Convert to fraction form
   42,109,221.02/63,169,856.31 = 12,965,525.51/x
3. Step 3: Cross multiply
   42,109,221.02x = 63,169,856.31 × 12,965,525.51
4. Step 4: Simplify right side
   42,109,221.02x = 819,030,383,450,339.50
5. Step 5: Solve for x
   x = 819,030,383,450,339.50/42,109,221.02
6. Step 6: Final answer
   x = 19,450,143.31