Finding the Fourth Proportional to 52,389.78, 72,294.18 and 28,515.94

Step by Step Solution

1. Step 1: Write the proportion equation
   52,389.78 : 72,294.18 = 28,515.94 : x
2. Step 2: Convert to fraction form
   52,389.78/72,294.18 = 28,515.94/x
3. Step 3: Cross multiply
   52,389.78x = 72,294.18 × 28,515.94
4. Step 4: Simplify right side
   52,389.78x = 2,061,536,499.23
5. Step 5: Solve for x
   x = 2,061,536,499.23/52,389.78
6. Step 6: Final answer
   x = 39,349.97