Finding the Fourth Proportional to 42,111,348.16, 63,173,039.28 and 12,967,648.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,111,348.16 : 63,173,039.28 = 12,967,648.96 : x
2. Step 2: Convert to fraction form
   42,111,348.16/63,173,039.28 = 12,967,648.96/x
3. Step 3: Cross multiply
   42,111,348.16x = 63,173,039.28 × 12,967,648.96
4. Step 4: Simplify right side
   42,111,348.16x = 819,205,797,119,331.25
5. Step 5: Solve for x
   x = 819,205,797,119,331.25/42,111,348.16
6. Step 6: Final answer
   x = 19,453,326.31