Finding the Fourth Proportional to 35,111.58, 48,453.05 and 20,772.15

Step by Step Solution

1. Step 1: Write the proportion equation
   35,111.58 : 48,453.05 = 20,772.15 : x
2. Step 2: Convert to fraction form
   35,111.58/48,453.05 = 20,772.15/x
3. Step 3: Cross multiply
   35,111.58x = 48,453.05 × 20,772.15
4. Step 4: Simplify right side
   35,111.58x = 1,006,473,892.79
5. Step 5: Solve for x
   x = 1,006,473,892.79/35,111.58
6. Step 6: Final answer
   x = 28,665.02