Finding the Fourth Proportional to 42,379.81, 63,567.84 and 12,796.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,379.81 : 63,567.84 = 12,796.73 : x
2. Step 2: Convert to fraction form
   42,379.81/63,567.84 = 12,796.73/x
3. Step 3: Cross multiply
   42,379.81x = 63,567.84 × 12,796.73
4. Step 4: Simplify right side
   42,379.81x = 813,460,739.28
5. Step 5: Solve for x
   x = 813,460,739.28/42,379.81
6. Step 6: Final answer
   x = 19,194.54