Finding the Fourth Proportional to 89,210.46, 122,801.42 and 77,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,210.46 : 122,801.42 = 77,105.42 : x
2. Step 2: Convert to fraction form
   89,210.46/122,801.42 = 77,105.42/x
3. Step 3: Cross multiply
   89,210.46x = 122,801.42 × 77,105.42
4. Step 4: Simplify right side
   89,210.46x = 9,468,654,671.24
5. Step 5: Solve for x
   x = 9,468,654,671.24/89,210.46
6. Step 6: Final answer
   x = 106,138.39