Finding the Fourth Proportional to 52,618.18, 72,611.90 and 28,744.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,618.18 : 72,611.90 = 28,744.96 : x
2. Step 2: Convert to fraction form
   52,618.18/72,611.90 = 28,744.96/x
3. Step 3: Cross multiply
   52,618.18x = 72,611.90 × 28,744.96
4. Step 4: Simplify right side
   52,618.18x = 2,087,226,161.02
5. Step 5: Solve for x
   x = 2,087,226,161.02/52,618.18
6. Step 6: Final answer
   x = 39,667.40