Finding the Fourth Proportional to 112,766.06, 155,542.20 and 72,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,766.06 : 155,542.20 = 72,530.72 : x
2. Step 2: Convert to fraction form
   112,766.06/155,542.20 = 72,530.72/x
3. Step 3: Cross multiply
   112,766.06x = 155,542.20 × 72,530.72
4. Step 4: Simplify right side
   112,766.06x = 11,281,587,756.38
5. Step 5: Solve for x
   x = 11,281,587,756.38/112,766.06
6. Step 6: Final answer
   x = 100,044.18