Finding the Fourth Proportional to 52,978.95, 73,111.50 and 28,780.16

Step by Step Solution

1. Step 1: Write the proportion equation
   52,978.95 : 73,111.50 = 28,780.16 : x
2. Step 2: Convert to fraction form
   52,978.95/73,111.50 = 28,780.16/x
3. Step 3: Cross multiply
   52,978.95x = 73,111.50 × 28,780.16
4. Step 4: Simplify right side
   52,978.95x = 2,104,160,302.28
5. Step 5: Solve for x
   x = 2,104,160,302.28/52,978.95
6. Step 6: Final answer
   x = 39,716.91