Finding the Fourth Proportional to 52,857, 72,942.66 and 30,513.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,857 : 72,942.66 = 30,513.96 : x
2. Step 2: Convert to fraction form
   52,857/72,942.66 = 30,513.96/x
3. Step 3: Cross multiply
   52,857x = 72,942.66 × 30,513.96
4. Step 4: Simplify right side
   52,857x = 2,225,769,409.53
5. Step 5: Solve for x
   x = 2,225,769,409.53/52,857
6. Step 6: Final answer
   x = 42,109.26