Finding the Fourth Proportional to 152,675.20, 210,678.72 and 89,018.88

Step by Step Solution

1. Step 1: Write the proportion equation
   152,675.20 : 210,678.72 = 89,018.88 : x
2. Step 2: Convert to fraction form
   152,675.20/210,678.72 = 89,018.88/x
3. Step 3: Cross multiply
   152,675.20x = 210,678.72 × 89,018.88
4. Step 4: Simplify right side
   152,675.20x = 18,754,383,694.23
5. Step 5: Solve for x
   x = 18,754,383,694.23/152,675.20
6. Step 6: Final answer
   x = 122,838.44