Finding the Fourth Proportional to 296,638.34, 444,953.72 and 72,000.50

Step by Step Solution

1. Step 1: Write the proportion equation
   296,638.34 : 444,953.72 = 72,000.50 : x
2. Step 2: Convert to fraction form
   296,638.34/444,953.72 = 72,000.50/x
3. Step 3: Cross multiply
   296,638.34x = 444,953.72 × 72,000.50
4. Step 4: Simplify right side
   296,638.34x = 32,036,890,316.86
5. Step 5: Solve for x
   x = 32,036,890,316.86/296,638.34
6. Step 6: Final answer
   x = 107,999.83