Finding the Fourth Proportional to 42,056.88, 63,084.60 and 19,880.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,056.88 : 63,084.60 = 19,880.88 : x
2. Step 2: Convert to fraction form
   42,056.88/63,084.60 = 19,880.88/x
3. Step 3: Cross multiply
   42,056.88x = 63,084.60 × 19,880.88
4. Step 4: Simplify right side
   42,056.88x = 1,254,177,362.45
5. Step 5: Solve for x
   x = 1,254,177,362.45/42,056.88
6. Step 6: Final answer
   x = 29,820.98