Finding the Fourth Proportional to 52,776.42, 72,832.59 and 28,904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,776.42 : 72,832.59 = 28,904.10 : x
2. Step 2: Convert to fraction form
   52,776.42/72,832.59 = 28,904.10/x
3. Step 3: Cross multiply
   52,776.42x = 72,832.59 × 28,904.10
4. Step 4: Simplify right side
   52,776.42x = 2,105,160,464.62
5. Step 5: Solve for x
   x = 2,105,160,464.62/52,776.42
6. Step 6: Final answer
   x = 39,888.28