Finding the Fourth Proportional to 152,196.53, 209,983.61 and 91,785.65

Step by Step Solution

1. Step 1: Write the proportion equation
   152,196.53 : 209,983.61 = 91,785.65 : x
2. Step 2: Convert to fraction form
   152,196.53/209,983.61 = 91,785.65/x
3. Step 3: Cross multiply
   152,196.53x = 209,983.61 × 91,785.65
4. Step 4: Simplify right side
   152,196.53x = 19,273,481,674.27
5. Step 5: Solve for x
   x = 19,273,481,674.27/152,196.53
6. Step 6: Final answer
   x = 126,635.49