Finding the Fourth Proportional to 42,541,648.40, 63,799,087.48 and 13,781,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,541,648.40 : 63,799,087.48 = 13,781,111.12 : x
2. Step 2: Convert to fraction form
   42,541,648.40/63,799,087.48 = 13,781,111.12/x
3. Step 3: Cross multiply
   42,541,648.40x = 63,799,087.48 × 13,781,111.12
4. Step 4: Simplify right side
   42,541,648.40x = 879,222,313,916,480.62
5. Step 5: Solve for x
   x = 879,222,313,916,480.62/42,541,648.40
6. Step 6: Final answer
   x = 20,667,330.65