Finding the Fourth Proportional to 152,145.68, 209,974.14 and 88,479

Step by Step Solution

1. Step 1: Write the proportion equation
   152,145.68 : 209,974.14 = 88,479 : x
2. Step 2: Convert to fraction form
   152,145.68/209,974.14 = 88,479/x
3. Step 3: Cross multiply
   152,145.68x = 209,974.14 × 88,479
4. Step 4: Simplify right side
   152,145.68x = 18,578,301,933.06
5. Step 5: Solve for x
   x = 18,578,301,933.06/152,145.68
6. Step 6: Final answer
   x = 122,108.64