Finding the Fourth Proportional to 102,435, 153,678.42 and 28,563

Step by Step Solution

1. Step 1: Write the proportion equation
   102,435 : 153,678.42 = 28,563 : x
2. Step 2: Convert to fraction form
   102,435/153,678.42 = 28,563/x
3. Step 3: Cross multiply
   102,435x = 153,678.42 × 28,563
4. Step 4: Simplify right side
   102,435x = 4,389,516,710.46
5. Step 5: Solve for x
   x = 4,389,516,710.46/102,435
6. Step 6: Final answer
   x = 42,851.73