Finding the Fourth Proportional to 150,081.12, 225,173.52 and 56,639.52

Step by Step Solution

1. Step 1: Write the proportion equation
   150,081.12 : 225,173.52 = 56,639.52 : x
2. Step 2: Convert to fraction form
   150,081.12/225,173.52 = 56,639.52/x
3. Step 3: Cross multiply
   150,081.12x = 225,173.52 × 56,639.52
4. Step 4: Simplify right side
   150,081.12x = 12,753,720,089.51
5. Step 5: Solve for x
   x = 12,753,720,089.51/150,081.12
6. Step 6: Final answer
   x = 84,978.84