Finding the Fourth Proportional to 307,817.38, 424,795.15 and 193,100.86

Step by Step Solution

1. Step 1: Write the proportion equation
   307,817.38 : 424,795.15 = 193,100.86 : x
2. Step 2: Convert to fraction form
   307,817.38/424,795.15 = 193,100.86/x
3. Step 3: Cross multiply
   307,817.38x = 424,795.15 × 193,100.86
4. Step 4: Simplify right side
   307,817.38x = 82,028,309,561.20
5. Step 5: Solve for x
   x = 82,028,309,561.20/307,817.38
6. Step 6: Final answer
   x = 266,483.68