Finding the Fourth Proportional to 42,656.52, 63,984.80 and 21,866.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,656.52 : 63,984.80 = 21,866.76 : x
2. Step 2: Convert to fraction form
   42,656.52/63,984.80 = 21,866.76/x
3. Step 3: Cross multiply
   42,656.52x = 63,984.80 × 21,866.76
4. Step 4: Simplify right side
   42,656.52x = 1,399,140,265.25
5. Step 5: Solve for x
   x = 1,399,140,265.25/42,656.52
6. Step 6: Final answer
   x = 32,800.15