Finding the Fourth Proportional to 42,616,020.21, 63,925,221.31 and 13,862,155.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,616,020.21 : 63,925,221.31 = 13,862,155.90 : x
2. Step 2: Convert to fraction form
   42,616,020.21/63,925,221.31 = 13,862,155.90/x
3. Step 3: Cross multiply
   42,616,020.21x = 63,925,221.31 × 13,862,155.90
4. Step 4: Simplify right side
   42,616,020.21x = 886,141,383,741,222.25
5. Step 5: Solve for x
   x = 886,141,383,741,222.25/42,616,020.21
6. Step 6: Final answer
   x = 20,793,621.26