Finding the Fourth Proportional to 52,870.34, 72,961.42 and 28,997.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,870.34 : 72,961.42 = 28,997.18 : x
2. Step 2: Convert to fraction form
   52,870.34/72,961.42 = 28,997.18/x
3. Step 3: Cross multiply
   52,870.34x = 72,961.42 × 28,997.18
4. Step 4: Simplify right side
   52,870.34x = 2,115,675,544.40
5. Step 5: Solve for x
   x = 2,115,675,544.40/52,870.34
6. Step 6: Final answer
   x = 40,016.31