Finding the Fourth Proportional to 102,514.50, 153,797.67 and 28,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,514.50 : 153,797.67 = 28,642.50 : x
2. Step 2: Convert to fraction form
   102,514.50/153,797.67 = 28,642.50/x
3. Step 3: Cross multiply
   102,514.50x = 153,797.67 × 28,642.50
4. Step 4: Simplify right side
   102,514.50x = 4,405,149,762.98
5. Step 5: Solve for x
   x = 4,405,149,762.98/102,514.50
6. Step 6: Final answer
   x = 42,970.99