Finding the Fourth Proportional to 42,501.34, 63,759.30 and 12,922.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,501.34 : 63,759.30 = 12,922.16 : x
2. Step 2: Convert to fraction form
   42,501.34/63,759.30 = 12,922.16/x
3. Step 3: Cross multiply
   42,501.34x = 63,759.30 × 12,922.16
4. Step 4: Simplify right side
   42,501.34x = 823,907,811.48
5. Step 5: Solve for x
   x = 823,907,811.48/42,501.34
6. Step 6: Final answer
   x = 19,385.46