Finding the Fourth Proportional to 72,580.17, 108,827.88 and 28,155.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,580.17 : 108,827.88 = 28,155.01 : x
2. Step 2: Convert to fraction form
   72,580.17/108,827.88 = 28,155.01/x
3. Step 3: Cross multiply
   72,580.17x = 108,827.88 × 28,155.01
4. Step 4: Simplify right side
   72,580.17x = 3,064,050,049.68
5. Step 5: Solve for x
   x = 3,064,050,049.68/72,580.17
6. Step 6: Final answer
   x = 42,216.08