Finding the Fourth Proportional to 42,127.50, 63,209.70 and 19,956.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,127.50 : 63,209.70 = 19,956.72 : x
2. Step 2: Convert to fraction form
   42,127.50/63,209.70 = 19,956.72/x
3. Step 3: Cross multiply
   42,127.50x = 63,209.70 × 19,956.72
4. Step 4: Simplify right side
   42,127.50x = 1,261,458,284.18
5. Step 5: Solve for x
   x = 1,261,458,284.18/42,127.50
6. Step 6: Final answer
   x = 29,943.82