Finding the Fourth Proportional to 123,210.53, 184,787.91 and 56,586.61

Step by Step Solution

1. Step 1: Write the proportion equation
   123,210.53 : 184,787.91 = 56,586.61 : x
2. Step 2: Convert to fraction form
   123,210.53/184,787.91 = 56,586.61/x
3. Step 3: Cross multiply
   123,210.53x = 184,787.91 × 56,586.61
4. Step 4: Simplify right side
   123,210.53x = 10,456,520,933.92
5. Step 5: Solve for x
   x = 10,456,520,933.92/123,210.53
6. Step 6: Final answer
   x = 84,867.11