Finding the Fourth Proportional to 315,926.04, 435,978.81 and 188,598.90

Step by Step Solution

1. Step 1: Write the proportion equation
   315,926.04 : 435,978.81 = 188,598.90 : x
2. Step 2: Convert to fraction form
   315,926.04/435,978.81 = 188,598.90/x
3. Step 3: Cross multiply
   315,926.04x = 435,978.81 × 188,598.90
4. Step 4: Simplify right side
   315,926.04x = 82,225,123,989.31
5. Step 5: Solve for x
   x = 82,225,123,989.31/315,926.04
6. Step 6: Final answer
   x = 260,267.00