Finding the Fourth Proportional to 102,221.34, 141,041.35 and 85,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,221.34 : 141,041.35 = 85,930.50 : x
2. Step 2: Convert to fraction form
   102,221.34/141,041.35 = 85,930.50/x
3. Step 3: Cross multiply
   102,221.34x = 141,041.35 × 85,930.50
4. Step 4: Simplify right side
   102,221.34x = 12,119,752,982.44
5. Step 5: Solve for x
   x = 12,119,752,982.44/102,221.34
6. Step 6: Final answer
   x = 118,563.82