Finding the Fourth Proportional to 52,781.08, 72,834.78 and 28,903

Step by Step Solution

1. Step 1: Write the proportion equation
   52,781.08 : 72,834.78 = 28,903 : x
2. Step 2: Convert to fraction form
   52,781.08/72,834.78 = 28,903/x
3. Step 3: Cross multiply
   52,781.08x = 72,834.78 × 28,903
4. Step 4: Simplify right side
   52,781.08x = 2,105,143,646.34
5. Step 5: Solve for x
   x = 2,105,143,646.34/52,781.08
6. Step 6: Final answer
   x = 39,884.44