Finding the Fourth Proportional to 112,993.56, 155,931.10 and 64,596.53

Step by Step Solution

1. Step 1: Write the proportion equation
   112,993.56 : 155,931.10 = 64,596.53 : x
2. Step 2: Convert to fraction form
   112,993.56/155,931.10 = 64,596.53/x
3. Step 3: Cross multiply
   112,993.56x = 155,931.10 × 64,596.53
4. Step 4: Simplify right side
   112,993.56x = 10,072,608,207.42
5. Step 5: Solve for x
   x = 10,072,608,207.42/112,993.56
6. Step 6: Final answer
   x = 89,143.21