Finding the Fourth Proportional to 112,819.02, 155,690.67 and 65,072.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,819.02 : 155,690.67 = 65,072.55 : x
2. Step 2: Convert to fraction form
   112,819.02/155,690.67 = 65,072.55/x
3. Step 3: Cross multiply
   112,819.02x = 155,690.67 × 65,072.55
4. Step 4: Simplify right side
   112,819.02x = 10,131,188,908.11
5. Step 5: Solve for x
   x = 10,131,188,908.11/112,819.02
6. Step 6: Final answer
   x = 89,800.36