Finding the Fourth Proportional to 42,402.88, 63,573.60 and 21,610.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,402.88 : 63,573.60 = 21,610.56 : x
2. Step 2: Convert to fraction form
   42,402.88/63,573.60 = 21,610.56/x
3. Step 3: Cross multiply
   42,402.88x = 63,573.60 × 21,610.56
4. Step 4: Simplify right side
   42,402.88x = 1,373,861,097.22
5. Step 5: Solve for x
   x = 1,373,861,097.22/42,402.88
6. Step 6: Final answer
   x = 32,400.18