Finding the Fourth Proportional to 42,369.12, 63,484.56 and 21,564

Step by Step Solution

1. Step 1: Write the proportion equation
   42,369.12 : 63,484.56 = 21,564 : x
2. Step 2: Convert to fraction form
   42,369.12/63,484.56 = 21,564/x
3. Step 3: Cross multiply
   42,369.12x = 63,484.56 × 21,564
4. Step 4: Simplify right side
   42,369.12x = 1,368,981,051.84
5. Step 5: Solve for x
   x = 1,368,981,051.84/42,369.12
6. Step 6: Final answer
   x = 32,310.82