Finding the Fourth Proportional to 160,435.82, 221,404.06 and 87,837.50

Step by Step Solution

1. Step 1: Write the proportion equation
   160,435.82 : 221,404.06 = 87,837.50 : x
2. Step 2: Convert to fraction form
   160,435.82/221,404.06 = 87,837.50/x
3. Step 3: Cross multiply
   160,435.82x = 221,404.06 × 87,837.50
4. Step 4: Simplify right side
   160,435.82x = 19,447,579,120.25
5. Step 5: Solve for x
   x = 19,447,579,120.25/160,435.82
6. Step 6: Final answer
   x = 121,217.19