Finding the Fourth Proportional to 89,191.77, 123,083.69 and 48,905.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,191.77 : 123,083.69 = 48,905.40 : x
2. Step 2: Convert to fraction form
   89,191.77/123,083.69 = 48,905.40/x
3. Step 3: Cross multiply
   89,191.77x = 123,083.69 × 48,905.40
4. Step 4: Simplify right side
   89,191.77x = 6,019,457,309.96
5. Step 5: Solve for x
   x = 6,019,457,309.96/89,191.77
6. Step 6: Final answer
   x = 67,488.93