Finding the Fourth Proportional to 42,471.98, 63,725.52 and 21,400.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,471.98 : 63,725.52 = 21,400.76 : x
2. Step 2: Convert to fraction form
   42,471.98/63,725.52 = 21,400.76/x
3. Step 3: Cross multiply
   42,471.98x = 63,725.52 × 21,400.76
4. Step 4: Simplify right side
   42,471.98x = 1,363,774,559.40
5. Step 5: Solve for x
   x = 1,363,774,559.40/42,471.98
6. Step 6: Final answer
   x = 32,109.98