Finding the Fourth Proportional to 52,642.73, 72,646.81 and 28,769.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,642.73 : 72,646.81 = 28,769.40 : x
2. Step 2: Convert to fraction form
   52,642.73/72,646.81 = 28,769.40/x
3. Step 3: Cross multiply
   52,642.73x = 72,646.81 × 28,769.40
4. Step 4: Simplify right side
   52,642.73x = 2,090,005,207.32
5. Step 5: Solve for x
   x = 2,090,005,207.32/52,642.73
6. Step 6: Final answer
   x = 39,701.69