Finding the Fourth Proportional to 423,063.34, 634,639.50 and 123,544.76

Step by Step Solution

1. Step 1: Write the proportion equation
   423,063.34 : 634,639.50 = 123,544.76 : x
2. Step 2: Convert to fraction form
   423,063.34/634,639.50 = 123,544.76/x
3. Step 3: Cross multiply
   423,063.34x = 634,639.50 × 123,544.76
4. Step 4: Simplify right side
   423,063.34x = 78,406,380,923.10
5. Step 5: Solve for x
   x = 78,406,380,923.10/423,063.34
6. Step 6: Final answer
   x = 185,330.13