Finding the Fourth Proportional to 112,729.06, 155,530.83 and 64,975.96

Step by Step Solution

1. Step 1: Write the proportion equation
   112,729.06 : 155,530.83 = 64,975.96 : x
2. Step 2: Convert to fraction form
   112,729.06/155,530.83 = 64,975.96/x
3. Step 3: Cross multiply
   112,729.06x = 155,530.83 × 64,975.96
4. Step 4: Simplify right side
   112,729.06x = 10,105,764,988.85
5. Step 5: Solve for x
   x = 10,105,764,988.85/112,729.06
6. Step 6: Final answer
   x = 89,646.49