Finding the Fourth Proportional to 72,807.77, 109,167.05 and 28,382.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72,807.77 : 109,167.05 = 28,382.63 : x
2. Step 2: Convert to fraction form
   72,807.77/109,167.05 = 28,382.63/x
3. Step 3: Cross multiply
   72,807.77x = 109,167.05 × 28,382.63
4. Step 4: Simplify right side
   72,807.77x = 3,098,447,513.46
5. Step 5: Solve for x
   x = 3,098,447,513.46/72,807.77
6. Step 6: Final answer
   x = 42,556.55