Finding the Fourth Proportional to 145,141.32, 217,725.72 and 56,401.67

Step by Step Solution

1. Step 1: Write the proportion equation
   145,141.32 : 217,725.72 = 56,401.67 : x
2. Step 2: Convert to fraction form
   145,141.32/217,725.72 = 56,401.67/x
3. Step 3: Cross multiply
   145,141.32x = 217,725.72 × 56,401.67
4. Step 4: Simplify right side
   145,141.32x = 12,280,093,635.31
5. Step 5: Solve for x
   x = 12,280,093,635.31/145,141.32
6. Step 6: Final answer
   x = 84,607.84