Finding the Fourth Proportional to 123,595.50, 185,430.15 and 87,641.22

Step by Step Solution

1. Step 1: Write the proportion equation
   123,595.50 : 185,430.15 = 87,641.22 : x
2. Step 2: Convert to fraction form
   123,595.50/185,430.15 = 87,641.22/x
3. Step 3: Cross multiply
   123,595.50x = 185,430.15 × 87,641.22
4. Step 4: Simplify right side
   123,595.50x = 16,251,324,570.78
5. Step 5: Solve for x
   x = 16,251,324,570.78/123,595.50
6. Step 6: Final answer
   x = 131,488.00