Finding the Fourth Proportional to 112,890.53, 155,793.69 and 64,500.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,890.53 : 155,793.69 = 64,500.42 : x
2. Step 2: Convert to fraction form
   112,890.53/155,793.69 = 64,500.42/x
3. Step 3: Cross multiply
   112,890.53x = 155,793.69 × 64,500.42
4. Step 4: Simplify right side
   112,890.53x = 10,048,757,659.38
5. Step 5: Solve for x
   x = 10,048,757,659.38/112,890.53
6. Step 6: Final answer
   x = 89,013.30