Finding the Fourth Proportional to 35,123.40, 48,483.54 and 20,971.08

Step by Step Solution

1. Step 1: Write the proportion equation
   35,123.40 : 48,483.54 = 20,971.08 : x
2. Step 2: Convert to fraction form
   35,123.40/48,483.54 = 20,971.08/x
3. Step 3: Cross multiply
   35,123.40x = 48,483.54 × 20,971.08
4. Step 4: Simplify right side
   35,123.40x = 1,016,752,196.02
5. Step 5: Solve for x
   x = 1,016,752,196.02/35,123.40
6. Step 6: Final answer
   x = 28,948.00