Finding the Fourth Proportional to 89,100.96, 122,678.80 and 75,645.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,100.96 : 122,678.80 = 75,645.60 : x
2. Step 2: Convert to fraction form
   89,100.96/122,678.80 = 75,645.60/x
3. Step 3: Cross multiply
   89,100.96x = 122,678.80 × 75,645.60
4. Step 4: Simplify right side
   89,100.96x = 9,280,111,433.28
5. Step 5: Solve for x
   x = 9,280,111,433.28/89,100.96
6. Step 6: Final answer
   x = 104,152.77