Finding the Fourth Proportional to 152,765.90, 210,842.28 and 89,103.69

Step by Step Solution

1. Step 1: Write the proportion equation
   152,765.90 : 210,842.28 = 89,103.69 : x
2. Step 2: Convert to fraction form
   152,765.90/210,842.28 = 89,103.69/x
3. Step 3: Cross multiply
   152,765.90x = 210,842.28 × 89,103.69
4. Step 4: Simplify right side
   152,765.90x = 18,786,825,156.01
5. Step 5: Solve for x
   x = 18,786,825,156.01/152,765.90
6. Step 6: Final answer
   x = 122,977.87