Finding the Fourth Proportional to 151,540.32, 209,171.52 and 87,893.76

Step by Step Solution

1. Step 1: Write the proportion equation
   151,540.32 : 209,171.52 = 87,893.76 : x
2. Step 2: Convert to fraction form
   151,540.32/209,171.52 = 87,893.76/x
3. Step 3: Cross multiply
   151,540.32x = 209,171.52 × 87,893.76
4. Step 4: Simplify right side
   151,540.32x = 18,384,871,377.72
5. Step 5: Solve for x
   x = 18,384,871,377.72/151,540.32
6. Step 6: Final answer
   x = 121,320.00