Finding the Fourth Proportional to 52,847.18, 72,933.71 and 28,978.51

Step by Step Solution

1. Step 1: Write the proportion equation
   52,847.18 : 72,933.71 = 28,978.51 : x
2. Step 2: Convert to fraction form
   52,847.18/72,933.71 = 28,978.51/x
3. Step 3: Cross multiply
   52,847.18x = 72,933.71 × 28,978.51
4. Step 4: Simplify right side
   52,847.18x = 2,113,510,134.68
5. Step 5: Solve for x
   x = 2,113,510,134.68/52,847.18
6. Step 6: Final answer
   x = 39,992.86