Finding the Fourth Proportional to 215,311.21, 323,085.73 and 88,922.05

Step by Step Solution

1. Step 1: Write the proportion equation
   215,311.21 : 323,085.73 = 88,922.05 : x
2. Step 2: Convert to fraction form
   215,311.21/323,085.73 = 88,922.05/x
3. Step 3: Cross multiply
   215,311.21x = 323,085.73 × 88,922.05
4. Step 4: Simplify right side
   215,311.21x = 28,729,443,821.92
5. Step 5: Solve for x
   x = 28,729,443,821.92/215,311.21
6. Step 6: Final answer
   x = 133,432.18