Finding the Fourth Proportional to 72,581.17, 108,829.38 and 28,156.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,581.17 : 108,829.38 = 28,156.01 : x
2. Step 2: Convert to fraction form
   72,581.17/108,829.38 = 28,156.01/x
3. Step 3: Cross multiply
   72,581.17x = 108,829.38 × 28,156.01
4. Step 4: Simplify right side
   72,581.17x = 3,064,201,111.57
5. Step 5: Solve for x
   x = 3,064,201,111.57/72,581.17
6. Step 6: Final answer
   x = 42,217.58