Finding the Fourth Proportional to 89,091.73, 122,899.98 and 55,089.35

Step by Step Solution

1. Step 1: Write the proportion equation
   89,091.73 : 122,899.98 = 55,089.35 : x
2. Step 2: Convert to fraction form
   89,091.73/122,899.98 = 55,089.35/x
3. Step 3: Cross multiply
   89,091.73x = 122,899.98 × 55,089.35
4. Step 4: Simplify right side
   89,091.73x = 6,770,479,398.71
5. Step 5: Solve for x
   x = 6,770,479,398.71/89,091.73
6. Step 6: Final answer
   x = 75,994.48