Finding the Fourth Proportional to 89,656.84, 123,810.42 and 56,181.16

Step by Step Solution

1. Step 1: Write the proportion equation
   89,656.84 : 123,810.42 = 56,181.16 : x
2. Step 2: Convert to fraction form
   89,656.84/123,810.42 = 56,181.16/x
3. Step 3: Cross multiply
   89,656.84x = 123,810.42 × 56,181.16
4. Step 4: Simplify right side
   89,656.84x = 6,955,813,015.69
5. Step 5: Solve for x
   x = 6,955,813,015.69/89,656.84
6. Step 6: Final answer
   x = 77,582.63