Finding the Fourth Proportional to 42,108,890.49, 63,169,360.98 and 12,965,195.35

Step by Step Solution

1. Step 1: Write the proportion equation
   42,108,890.49 : 63,169,360.98 = 12,965,195.35 : x
2. Step 2: Convert to fraction form
   42,108,890.49/63,169,360.98 = 12,965,195.35/x
3. Step 3: Cross multiply
   42,108,890.49x = 63,169,360.98 × 12,965,195.35
4. Step 4: Simplify right side
   42,108,890.49x = 819,003,105,240,367.38
5. Step 5: Solve for x
   x = 819,003,105,240,367.38/42,108,890.49
6. Step 6: Final answer
   x = 19,449,648.18