Finding the Fourth Proportional to 384,086.56, 576,140.37 and 103,603

Step by Step Solution

1. Step 1: Write the proportion equation
   384,086.56 : 576,140.37 = 103,603 : x
2. Step 2: Convert to fraction form
   384,086.56/576,140.37 = 103,603/x
3. Step 3: Cross multiply
   384,086.56x = 576,140.37 × 103,603
4. Step 4: Simplify right side
   384,086.56x = 59,689,870,753.11
5. Step 5: Solve for x
   x = 59,689,870,753.11/384,086.56
6. Step 6: Final answer
   x = 155,407.34