Finding the Fourth Proportional to 42,201.84, 63,280.72 and 21,119.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,201.84 : 63,280.72 = 21,119.12 : x
2. Step 2: Convert to fraction form
   42,201.84/63,280.72 = 21,119.12/x
3. Step 3: Cross multiply
   42,201.84x = 63,280.72 × 21,119.12
4. Step 4: Simplify right side
   42,201.84x = 1,336,433,119.37
5. Step 5: Solve for x
   x = 1,336,433,119.37/42,201.84
6. Step 6: Final answer
   x = 31,667.65